# Topic Questions: 4.5 One-tailed and two-tailed tests. — WST02 Hypothesis tests > 63 WST02 Hypothesis tests topic questions (275 marks) on 4.5 One-tailed and two-tailed tests. — 36 papers, 2014–2026. Open the exact question in the… - Canonical HTML: https://www.examsci.com/topics/edexcel-ial/mathematics/statistics-2-wst02/hypothesis-tests/4-5-one-tailed-and-two-tailed-tests/ - Markdown mirror: https://www.examsci.com/topics/edexcel-ial/mathematics/statistics-2-wst02/hypothesis-tests/4-5-one-tailed-and-two-tailed-tests/index.md --- Edexcel IAL · Mathematics · WST02 · Hypothesis tests 63 WST02 Hypothesis tests topic questions are tagged to this syllabus point across 36 papers (2014–2026). Only the parts whose knowledge graph matches this syllabus statement are counted, and the table shows which parts of each question are involved. - 63 topic questions - 36 papers - 275 tagged marks - 29.0% of topic questions - 42.6% of topic marks - 2014–2026 - Syllabus 2014–current - [All WST02 Hypothesis tests topic questions](https://www.examsci.com/topics/edexcel-ial/mathematics/statistics-2-wst02/hypothesis-tests/) - [All paper codes](https://www.examsci.com/topics/) Core finding **This Hypothesis tests syllabus point appears in 36 WST02 papers across 2014–2026, contributing 63 topic questions and 275 marks.** The most recent appearance is WST02/01 January 2026. That equals 29.0% of the 217 topic questions and 42.6% of the 646 marks tagged to Hypothesis tests. Only parts tagged to this subtopic are counted, so a four-part question can contribute one item and one part's marks. The table lists every matching question, its tagged parts and marks, with a link back to the paper page. Sessions are newest first, so the statement can be traced back through the full paper history. ## Topic questions by session Newest sessions first. Parts and marks count only the parts tagged to this subtopic; “x of y parts” shows how much of the question is tagged elsewhere. Select the paper cell to open the matching question on the paper page, or use **Go to Practice Hub** to answer that exact question in the Interactive Practice Hub. | Paper | Question | Type | Parts | Marks | Difficulty | Practice | | --- | --- | --- | --- | --- | --- | --- | | [**WST02/01** January 2026 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2026-january-wst02-01/#q-4) | **Q4** Hypothesis Testing with Binomial and Poisson Approximation - Edexcel IAL Statistics S2 Jan 2026 Q4 | FRQ | 1 of 3 parts ((b)) | 6 of 8 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=14b2bcbc-6410-4d06-93d2-4472dc900c55&question_id=28bb1f4c-5924-4a0c-bc7e-a75095099a79&source_detail=WST02%2F01+January+2026) | | [**WST02/02** January 2026 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2026-january-wst02-02/#q-4) | **Q4** Hypothesis Testing - Edexcel IAL S2 2026 Jan Q4 | FRQ | 1 of 4 parts ((a)(i)) | 1 of 7 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=1336b9c7-1caa-4bf4-8158-471c4e419191&question_id=ff16b768-ee60-455d-883a-dc90af98131d&source_detail=WST02%2F02+January+2026) | | [**WST02/01** October 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2025-october-wst02-01/#q-2) | **Q2** Poisson Distribution and Hypothesis Testing - Edexcel IAL Statistics S2 October 2025 Q2 | FRQ | 1 of 4 parts ((c)) | 5 of 12 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=8f357307-bb78-4a61-8abf-3e698f0d6143&question_id=36b5fba2-02a1-457e-87f0-5c3047aa892f&source_detail=WST02%2F01+October+2025) | | [**WST02/01** October 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2025-october-wst02-01/#q-5) | **Q5** Binomial and Normal Approximation - Edexcel IAL Statistics S2 October 2025 Q5 | FRQ | 1 of 4 parts ((d)) | 5 of 15 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=8f357307-bb78-4a61-8abf-3e698f0d6143&question_id=4966bc5f-d95a-472a-b9d8-37cd2d116e1a&source_detail=WST02%2F01+October+2025) | | [**WST02/02** October 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2025-october-wst02-02/#q-2) | **Q2** Sampling and Hypothesis Testing - Oct 2025 Q2 | FRQ | 1 of 4 parts ((d)) | 5 of 9 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=5763a03e-ff1a-43ec-b633-f62c1ea0562d&question_id=22c660f7-c6ef-4e58-b355-ece0925cb9b1&source_detail=WST02%2F02+October+2025) | | [**WST02/01** June 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2025-june-wst02-01/#q-2) | **Q2** Poisson Distribution and Hypothesis Testing - Edexcel IAL S2 Summer 2025 Q2 | FRQ | 1 of 6 parts ((d)) | 3 of 10 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=7b41e39a-add0-4d36-99ba-87335c3a6b26&question_id=88df92b9-f079-433a-9722-dbbaf7fcc426&source_detail=WST02%2F01+June+2025) | | [**WST02/01** June 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2025-june-wst02-01/#q-7) | **Q7** Binomial, Normal Approximation and Hypothesis Testing - Edexcel IAL S2 Summer 2025 Q7 | FRQ | 1 of 5 parts ((e)) | 5 of 14 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=7b41e39a-add0-4d36-99ba-87335c3a6b26&question_id=ad21ea48-dcdb-4aed-9f96-af00954705f8&source_detail=WST02%2F01+June+2025) | | [**WST02/01** January 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2025-january-wst02-01/#q-5) | **Q5** Poisson Process & Hypothesis Testing - Edexcel IAL S2 Jan 2025 Q5 | FRQ | 1 of 5 parts ((c)) | 3 of 10 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=154f2d40-caed-481c-87f7-700856e3a4b7&question_id=2fa0982a-33ca-4d13-a0e2-516b8fd674bd&source_detail=WST02%2F01+January+2025) | | [**WST02/01** October 2024 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2024-october-wst02-01/#q-3) | **Q3** Poisson Hypothesis Testing - Edexcel IAL S2 October 2024 Q3 | FRQ | 1 of 6 parts ((d)) | 3 of 11 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=e6efae2d-f7f5-4ff2-90eb-7d665afb0657&question_id=dcfdeeff-b6d8-4c33-9ac6-a0fe2c2dffea&source_detail=WST02%2F01+October+2024) | | [**WST02/01** June 2024 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2024-june-wst02-01/#q-1) | **Q1** Poisson Distribution Calculations and Hypothesis Testing - Edexcel IAL S2 June 2024 Q1 | FRQ | 1 of 5 parts ((c)) | 5 of 13 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=c917a3a0-784b-4d3a-a286-6af513d8d5ed&question_id=9db97ad1-d4b9-4506-b65f-6c8bc1b932c9&source_detail=WST02%2F01+June+2024) | | [**WST02/01** June 2024 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2024-june-wst02-01/#q-3) | **Q3** Sampling and Hypothesis Testing - Edexcel IAL S2 June 2024 Q3 | FRQ | 1 of 6 parts ((d)) | 3 of 15 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=c917a3a0-784b-4d3a-a286-6af513d8d5ed&question_id=466f10c6-2632-47c5-a933-886bd76b3a9a&source_detail=WST02%2F01+June+2024) | | [**WST02/01** January 2024 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2024-january-wst02-01/#q-3) | **Q3** Hypothesis Testing and Binomial Distribution - Edexcel IAL S2 Jan 2024 Q3 | FRQ | 2 of 5 parts ((b), (e)) | 8 of 12 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=325ce792-2a12-4eff-8cac-7cfe4a4eebf0&question_id=bce1a761-7bba-4786-9707-60913ec098ae&source_detail=WST02%2F01+January+2024) | | [**WST02/01** October 2023 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2023-october-wst02-01/#q-5) | **Q5** Poisson Distribution and Hypothesis Testing - Edexcel IAL S2 October 2023 Q5 | FRQ | 1 of 5 parts ((c)) | 5 of 16 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=30110356-ce19-4ce6-a8c6-13722cfa8357&question_id=e5f1f60f-681e-4f31-aee0-0fcdb70d7dc0&source_detail=WST02%2F01+October+2023) | | [**WST02/01** June 2023 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2023-june-wst02-01/#q-4) | **Q4** Poisson Approximation and Hypothesis Testing - Edexcel IAL S2 2023 Jun Q4 | FRQ | 1 of 5 parts ((c)(i)) | 5 of 13 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=d8dab4f6-2b3d-4e8e-8bfe-12c57a8fe05b&question_id=e8641497-9f6e-4c7d-9937-fbafff8875b4&source_detail=WST02%2F01+June+2023) | | [**WST02/01** January 2023 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2023-january-wst02-01/#q-1) | **Q1** Poisson Distribution and Hypothesis Testing - Edexcel IAL S2 Jan 2023 Q1 | FRQ | 1 of 5 parts ((d)) | 5 of 11 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=59695b5b-5d43-42ea-a3b1-74b03b499b14&question_id=561ff346-ebac-4733-9801-595f7521d510&source_detail=WST02%2F01+January+2023) | | [**WST02/01** January 2023 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2023-january-wst02-01/#q-3) | **Q3** Binomial Distribution and Sample Size - Edexcel IAL S2 Jan 2023 Q3 | FRQ | 1 of 4 parts ((b)) | 4 of 11 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=59695b5b-5d43-42ea-a3b1-74b03b499b14&question_id=3d6d4d0c-4611-4cc1-b008-b49d5a0abcfe&source_detail=WST02%2F01+January+2023) | | [**WST02/01** October 2022 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2022-october-wst02-01/#q-3) | **Q3** Hypothesis Testing and Approximations - Edexcel IAL S2 October 2022 Q3 | FRQ | 2 of 3 parts ((a), (c)) | 9 of 10 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=6c42d132-14b9-431d-9eed-afb3c044a404&question_id=8f48475e-7473-4693-92a6-f6fa95e9e475&source_detail=WST02%2F01+October+2022) | | [**WST02/01** June 2022 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2022-june-wst02-01/#q-4) | **Q4** Hypothesis Tests - Edexcel IAL S2 2022 Jun Q4 | FRQ | 1 of 2 parts ((b)) | 6 of 9 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=9f6914eb-5e53-428c-8964-d4888d4d5a86&question_id=43cd177e-02dd-4ad2-8a21-51e5b03cb97a&source_detail=WST02%2F01+June+2022) | | [**WST02/01** January 2022 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2022-january-wst02-01/#q-3) | **Q3** Hypothesis Testing for Poisson Rate - Edexcel IAL S2 Jan 2022 Q3 | FRQ | 2 of 5 parts ((b), (c)) | 4 of 9 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=f354e734-a4a2-433d-ac31-c2812ea6e7b8&question_id=3a9df4b8-0705-48a5-a186-e50f62a8f389&source_detail=WST02%2F01+January+2022) | | [**WST02/01** January 2022 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2022-january-wst02-01/#q-5) | **Q5** Binomial to Poisson and Normal Approximations - Edexcel IAL S2 Jan 2022 Q5 | FRQ | 1 of 5 parts ((e)) | 7 of 14 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=f354e734-a4a2-433d-ac31-c2812ea6e7b8&question_id=21c28ec3-cb14-40df-86a5-8b5155e53601&source_detail=WST02%2F01+January+2022) | | [**WST02/01** October 2021 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2021-october-wst02-01/#q-1) | **Q1** Binomial and Poisson Distributions - Edexcel IAL S2 October 2021 Q1 | FRQ | 1 of 4 parts ((d)) | 7 of 14 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=f778dcac-54cf-4f29-92b2-6408cdfecc6a&question_id=29d8650c-59d5-4f14-b27e-fb3438b8ead7&source_detail=WST02%2F01+October+2021) | | [**WST02/01** October 2021 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2021-october-wst02-01/#q-4) | **Q4** Poisson Distribution - Edexcel IAL S2 October 2021 Q4 | FRQ | 1 of 6 parts ((f)) | 2 of 15 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=f778dcac-54cf-4f29-92b2-6408cdfecc6a&question_id=dbfa2fed-1417-4e28-993e-74040d839cfb&source_detail=WST02%2F01+October+2021) | | [**WST02/01** June 2021 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2021-june-wst02-01/#q-1) | **Q1** Binomial and Poisson Distributions - Edexcel IAL S2 2021 Jun Q1 | FRQ | 1 of 5 parts ((c)) | 1 of 14 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=6f1bf773-b5a4-4156-8fe9-4b4365817785&question_id=c41ba065-46c2-44c3-a875-bdf24664f24b&source_detail=WST02%2F01+June+2021) | | [**WST02/01** June 2021 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2021-june-wst02-01/#q-2) | **Q2** Poisson Distribution and Hypothesis Testing - Edexcel IAL S2 2021 Jun Q2 | FRQ | 1 of 5 parts ((e)) | 5 of 15 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=6f1bf773-b5a4-4156-8fe9-4b4365817785&question_id=c51ca5ce-0791-4847-8119-aae5ec96037c&source_detail=WST02%2F01+June+2021) | | [**WST02/01** January 2021 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2021-january-wst02-01/#q-1) | **Q1** Binomial and Poisson Distributions - Edexcel IAL Statistics S2 Jan 2021 Q1 | FRQ | 1 of 6 parts ((e)) | 5 of 14 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=1fc666ae-cb4a-4f49-88e4-685f567dba28&question_id=8b699746-a517-46ac-ba85-a01db35d6ce7&source_detail=WST02%2F01+January+2021) | | [**WST02/01** January 2021 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2021-january-wst02-01/#q-3) | **Q3** Poisson Distribution and Normal Approximation - Edexcel IAL Statistics S2 Jan 2021 Q3 | FRQ | 1 of 5 parts ((d)) | 5 of 17 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=1fc666ae-cb4a-4f49-88e4-685f567dba28&question_id=9bdf882c-540b-4c3d-b067-b4c355e33737&source_detail=WST02%2F01+January+2021) | | [**WST02/01** October 2020 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2020-october-wst02-01/#q-3) | **Q3** Binomial and Normal Approximation - Edexcel IAL S2 June 2020 Q3 | FRQ | 1 of 4 parts ((c)) | 4 of 15 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=fed673c5-882c-48d5-9e24-7901c099637a&question_id=7a79a1d7-5a2c-4e01-a694-94c472f80174&source_detail=WST02%2F01+October+2020) | | [**WST02/01** October 2020 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2020-october-wst02-01/#q-4) | **Q4** Poisson Distribution and Hypothesis Testing - Edexcel IAL S2 June 2020 Q4 | FRQ | 1 of 6 parts ((c)) | 5 of 16 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=fed673c5-882c-48d5-9e24-7901c099637a&question_id=21b87064-b08a-442d-9ac0-4c94006d6efc&source_detail=WST02%2F01+October+2020) | | [**WST02/01** January 2020 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2020-january-wst02-01/#q-2) | **Q2** Binomial Distribution and Hypothesis Testing - Edexcel IAL S2 January 2020 Q2 | FRQ | 1 of 4 parts ((b)) | 5 of 15 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=751855fb-d3c0-400c-bfc3-b99733038379&question_id=f0e9177f-b885-4d56-8182-93d1f9572994&source_detail=WST02%2F01+January+2020) | | [**WST02/01** January 2020 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2020-january-wst02-01/#q-5) | **Q5** Poisson Process Hypothesis Testing - Edexcel IAL S2 January 2020 Q5 | FRQ | 2 of 5 parts ((a), (e)) | 7 of 13 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=751855fb-d3c0-400c-bfc3-b99733038379&question_id=a51cc03b-76da-4d29-8da9-c797912b11ad&source_detail=WST02%2F01+January+2020) | | [**WST02/01** October 2019 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2019-october-wst02-01/#q-3) | **Q3** Poisson Distribution and Hypothesis Testing - Edexcel IAL S2 October 2019 Q3 | FRQ | 1 of 3 parts ((c)) | 7 of 12 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=07694c98-38fb-461c-aaf2-5b1b89a8e110&question_id=206a25d4-6cfd-47fb-b9a9-90e04f28e645&source_detail=WST02%2F01+October+2019) | | [**WST02/01** October 2019 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2019-october-wst02-01/#q-7) | **Q7** Cumulative Distribution Function and Hypothesis Test - Edexcel IAL S2 October 2019 Q7 | FRQ | 1 of 3 parts ((c)) | 5 of 12 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=07694c98-38fb-461c-aaf2-5b1b89a8e110&question_id=28f278d9-6388-41b7-8995-a1a0598de14b&source_detail=WST02%2F01+October+2019) | | [**WST02/01** June 2019 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2019-june-wst02-01/#q-4) | **Q4** Poisson Hypothesis Testing - Edexcel IAL S2 2019 Jun Q4 | FRQ | 2 parts ((a), (b)) | 8 | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=b8135c78-df0b-479a-a115-9ab0a20632da&question_id=c28273de-ddc0-42ca-bb8f-2220bcc847c9&source_detail=WST02%2F01+June+2019) | | [**WST02/01** June 2019 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2019-june-wst02-01/#q-6) | **Q6** Binomial Distribution and Hypothesis Testing - Edexcel IAL S2 2019 Jun Q6 | FRQ | 1 of 6 parts ((e)) | 3 of 11 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=b8135c78-df0b-479a-a115-9ab0a20632da&question_id=30523ca3-d443-4503-bbdf-9f28a3a3c133&source_detail=WST02%2F01+June+2019) | | [**WST02/01** January 2019 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2019-january-wst02-01/#q-4) | **Q4** Hypothesis Testing - Edexcel IAL S2 2019 Jan Q4 | FRQ | 1 of 2 parts ((a)) | 5 of 9 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=53fefb90-8de7-4b26-8179-ca19ddc1b028&question_id=de0c33a4-2b75-4a0b-b5f8-392b73c5d05a&source_detail=WST02%2F01+January+2019) | | [**WST02/01** October 2018 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2018-october-wst02-01/#q-1) | **Q1** Poisson Distribution and Hypothesis Testing - Edexcel IAL S2 Oct 2018 Q1 | FRQ | 1 of 2 parts ((b)) | 5 of 7 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=e0fa16c2-3bc6-4e13-9d1a-aa7e6c0a5d96&question_id=2155fad5-bc4d-4915-98e9-b61d2355eb62&source_detail=WST02%2F01+October+2018) | | [**WST02/01** October 2018 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2018-october-wst02-01/#q-4) | **Q4** Sampling Distribution and Hypothesis Testing - Edexcel IAL S2 Oct 2018 Q4 | FRQ | 1 of 5 parts ((d)) | 2 of 9 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=e0fa16c2-3bc6-4e13-9d1a-aa7e6c0a5d96&question_id=a9ec4972-e690-476a-8acc-02a369edfdde&source_detail=WST02%2F01+October+2018) | | [**WST02/01** June 2018 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2018-june-wst02-01/#q-2) | **Q2** Hypothesis Testing and Expectation - Edexcel IAL June 2018 S2 Q2 | FRQ | 1 of 3 parts ((a)) | 5 of 12 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=58d76277-ed41-4a22-aad3-190bcc05fc64&question_id=30c4354e-cdb3-4825-886c-94fb8890ab8c&source_detail=WST02%2F01+June+2018) | | [**WST02/01** June 2018 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2018-june-wst02-01/#q-7) | **Q7** Hypothesis Testing with Binomial Distribution - Edexcel IAL June 2018 S2 Q7 | FRQ | 2 of 3 parts ((a), (c)) | 9 of 10 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=58d76277-ed41-4a22-aad3-190bcc05fc64&question_id=ab33a5ab-eeac-43da-b598-b485d5b9e18c&source_detail=WST02%2F01+June+2018) | | [**WST02/01** January 2018 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2018-january-wst02-01/#q-4) | **Q4** Binomial Parameters & Hypothesis Testing - Jan 2018 Q4 | FRQ | 1 of 3 parts ((c)) | 4 of 11 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=e3eb7fb4-d611-4733-a020-d1187ae4b8db&question_id=ccf0f8d2-e6d4-4495-aa2a-d03b80d7d3d6&source_detail=WST02%2F01+January+2018) | | [**WST02/01** October 2017 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2017-october-wst02-01/#q-3) | **Q3** Poisson Distribution and Hypothesis Testing - Edexcel IAL S2 October 2017 Q3 | FRQ | 1 of 4 parts ((d)) | 8 of 14 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=a57bafdb-c12d-4ea0-9708-234ab37a04e7&question_id=94feedfa-9937-47b3-a07d-c52d48025d37&source_detail=WST02%2F01+October+2017) | | [**WST02/01** June 2017 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2017-june-wst02-01/#q-4) | **Q4** Poisson Approximation and Binomial Hypothesis Testing - Edexcel IAL S2 June 2017 Q4 | FRQ | 1 of 5 parts ((c)) | 4 of 13 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=2c59387d-3418-40a4-a253-4f75663d7962&question_id=f4f90d53-086e-4c38-8000-2e2f5d15da2a&source_detail=WST02%2F01+June+2017) | | [**WST02/01** January 2017 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2017-january-wst02-01/#q-5) | **Q5** Poisson Process and Hypothesis Testing - Edexcel IAL S2 Jan 2017 Q5 | FRQ | 1 of 6 parts ((c)) | 4 of 14 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=4bee0927-c665-431e-a727-8b7b0917a422&question_id=169c52b2-8afe-4249-ac35-360fb54ffcb1&source_detail=WST02%2F01+January+2017) | | [**WST02/01** January 2017 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2017-january-wst02-01/#q-6) | **Q6** Hypothesis Testing with Poisson Approximation - Edexcel IAL S2 Jan 2017 Q6 | FRQ | 1 part | 7 | Hard | [Go to Practice Hub](https://www.examsci.com/practice?set_id=4bee0927-c665-431e-a727-8b7b0917a422&question_id=3e6b4a42-358e-48e2-a1e3-b063faef6fd0&source_detail=WST02%2F01+January+2017) | | [**WST02/01** October 2016 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2016-october-wst02-01/#q-1) | **Q1** Hypothesis Testing - Edexcel IAL S2 October 2016 Q1 | FRQ | 1 of 2 parts ((a)) | 6 of 10 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=c63e980b-bb97-49fe-81c9-cd74781ea555&question_id=cb6b6e78-17fa-46a4-bb30-dbcfd0193da3&source_detail=WST02%2F01+October+2016) | | [**WST02/01** June 2016 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2016-june-wst02-01/#q-7) | **Q7** Binomial and Poisson Hypothesis Test - Edexcel S2 2016 Jun Q7 | FRQ | 1 of 5 parts ((d)) | 6 of 15 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=33eeab29-cde4-4990-9446-9d46d0bbd486&question_id=f34046a1-6f92-4d11-a5ec-941fb749136e&source_detail=WST02%2F01+June+2016) | | [**WST02/01** January 2016 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2016-january-wst02-01/#q-7) | **Q7** Poisson Process and Hypothesis Test - Edexcel IAL S2 Jan 2016 Q7 | FRQ | 1 of 2 parts ((b)) | 6 of 12 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=78e8bbaa-28b6-41e1-9a32-98a24be7e3ed&question_id=53c8148f-f2d3-4ce6-91df-a9a4e0a29994&source_detail=WST02%2F01+January+2016) | | [**WST02/01** June 2015 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2015-june-wst02-01/#q-2) | **Q2** Poisson Distribution and Hypothesis Testing - Edexcel IAL S2 2015 Jun Q2 | FRQ | 1 of 4 parts ((d)) | 5 of 15 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=ae214267-9f21-476b-9f6d-b700763fb73b&question_id=3916b758-babb-41e6-96ad-c1eec2069854&source_detail=WST02%2F01+June+2015) | | [**WST02/01** June 2015 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2015-june-wst02-01/#q-4) | **Q4** Hypothesis Testing - Edexcel IAL S2 2015 Jun Q4 | FRQ | 1 of 2 parts ((a)) | 3 of 5 on the paper | Hard | [Go to Practice Hub](https://www.examsci.com/practice?set_id=ae214267-9f21-476b-9f6d-b700763fb73b&question_id=61cd71ce-3590-46fe-a9fb-309de0a1b3c4&source_detail=WST02%2F01+June+2015) | | [**WST02/01** June 2015 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2015-june-wst02-01/#q-6) | **Q6** Binomial Distribution and Approximation - Edexcel IAL S2 2015 Jun Q6 | FRQ | 1 of 5 parts ((e)) | 5 of 15 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=ae214267-9f21-476b-9f6d-b700763fb73b&question_id=9265392a-d6c2-4aaf-8ba9-629be4e2ace5&source_detail=WST02%2F01+June+2015) | | [**WST02/01** January 2015 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2015-january-wst02-01/#q-4) | **Q4** Hypothesis testing with Poisson distribution - Edexcel IAL Statistics S2 Jan 2015 Q4 | FRQ | 1 of 2 parts ((b)) | 4 of 7 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=ea779e7a-1d7e-4840-bafb-967456a86efc&question_id=51da8f76-29c0-4ce2-9ff9-6f00e9e44159&source_detail=WST02%2F01+January+2015) | | [**WST02/01** January 2015 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2015-january-wst02-01/#q-6) | **Q6** Binomial distribution and hypothesis tests - Edexcel IAL Statistics S2 Jan 2015 Q6 | FRQ | 1 of 4 parts ((c)) | 5 of 13 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=ea779e7a-1d7e-4840-bafb-967456a86efc&question_id=ebb2d8e2-1d1b-4682-bf0d-3ad3a496175b&source_detail=WST02%2F01+January+2015) | | [**WST02/01** June 2014 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2014-june-wst02-01/#q-1) | **Q1** Poisson Approximation and Hypothesis Testing - Edexcel IAL S2 June 2014 Q1 | FRQ | 1 of 3 parts ((c)) | 5 of 7 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=63ec63ed-ddc3-43d5-b01d-977b457fe429&question_id=785134e8-4c08-4b31-aca7-78ebd98efec8&source_detail=WST02%2F01+June+2014) | | [**WST02/01** June 2014 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2014-june-wst02-01/#q-5) | **Q5** Binomial Hypothesis Testing - Edexcel IAL S2 June 2014 Q5 | FRQ | 2 of 4 parts ((a)(i), (a)(ii)) | 4 of 7 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=63ec63ed-ddc3-43d5-b01d-977b457fe429&question_id=302fb3ae-48b6-4bc0-bfa4-506b5df81771&source_detail=WST02%2F01+June+2014) | | [**WST02/01** January 2014 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2014-january-wst02-01/#q-2) | **Q2** Sampling and Hypothesis Testing - Edexcel IAL S2 Jan 2014 Q2 | FRQ | 1 of 4 parts ((d)) | 6 of 10 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=0bc6d1b9-aeb4-4db3-b222-61e62b8fdf0e&question_id=b38fc921-b5d0-499c-b630-4991a2112e78&source_detail=WST02%2F01+January+2014) | | [**WST02/01** January 2014 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/statistics-2-wst02/2014-january-wst02-01/#q-4) | **Q4** Poisson Distribution Hypothesis Test - Edexcel IAL S2 Jan 2014 Q4 | FRQ | 1 of 3 parts ((a)) | 1 of 7 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=0bc6d1b9-aeb4-4db3-b222-61e62b8fdf0e&question_id=2a6aa8ab-86e0-472c-b470-c941347115c3&source_detail=WST02%2F01+January+2014) | ## Related topic questions in Hypothesis tests - [4.1 Population, census and sample. Sampling unit, sampling frame.](https://www.examsci.com/topics/edexcel-ial/mathematics/statistics-2-wst02/hypothesis-tests/4-1-population-census-and-sample-sampling-unit-sampling-frame/) — 35 question items · 17 papers — 61 marks · 2014–2026 - [4.2 Concepts of a statistic and its sampling distribution.](https://www.examsci.com/topics/edexcel-ial/mathematics/statistics-2-wst02/hypothesis-tests/4-2-concepts-of-a-statistic-and-its-sampling-distribution/) — 72 question items · 30 papers — 225 marks · 2015–2026 - [4.3 Concept and interpretation of a hypothesis test. Null and alternative hypotheses.](https://www.examsci.com/topics/edexcel-ial/mathematics/statistics-2-wst02/hypothesis-tests/4-3-concept-and-interpretation-of-a-hypothesis-test-null-and-alternative-hypotheses/) — 83 question items · 36 papers — 291 marks · 2014–2026 - [4.4 Critical region.](https://www.examsci.com/topics/edexcel-ial/mathematics/statistics-2-wst02/hypothesis-tests/4-4-critical-region/) — 53 question items · 29 papers — 155 marks · 2014–2026 - [4.6 Hypothesis tests for the parameter p of a binomial distribution and for the mean of a Poisson distribution.](https://www.examsci.com/topics/edexcel-ial/mathematics/statistics-2-wst02/hypothesis-tests/4-6-hypothesis-tests-for-the-parameter-p-of-a-binomial-distribution-and-for-the-mean/) — 94 question items · 36 papers — 354 marks · 2014–2026 ## Topic question rules and edge cases **How many topic questions cover this syllabus point?** 56 question stems cover this subtopic across 36 papers, but only 63 tagged parts and 275 marks belong to it. Other parts of the same questions are assessed under different statements and are excluded from this page. **Which papers include this subtopic?** The table lists every matching session from 2014–2026. Each row links to the question anchor on the paper page, where the full paper context and practice entry point are available. **Why can one question appear under several subtopics?** The parts of one question can assess different syllabus statements. Each part is counted under its own subtopics, so the same question stem can appear on several subtopic pages while each page lists only the parts and marks tagged to that statement. **Can I practise these questions with AI marking?** Yes. Open a paper from the table and use the Interactive Practice Hub entry point. The page itself is static HTML so search engines and retrieval agents can read the full question list without executing JavaScript. --- Full page with native tables, bar charts and Practice Hub links: https://www.examsci.com/topics/edexcel-ial/mathematics/statistics-2-wst02/hypothesis-tests/4-5-one-tailed-and-two-tailed-tests/