plumiHypothesis testing, significance testing, confidence intervals and power: Edexcel A‑Level Statistics questions
Every Edexcel A-Level Statistics exam question on H.15 Hypothesis testing, significance testing, confidence intervals and power, 2018–2025, with its mark scheme and examiner’s report.
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All 11 questions on Hypothesis testing, significance testing, confidence intervals and power, as a list
- June 2025, Statistical Inference, Q3 (9 marks): 3 Sedentary lifestyles are widely discussed as a possible contributor to increased health issues in later life. Sedentary behaviour is defined as any waking beh
- June 2025, Statistics in Practice, Q5 (19 marks): 5 Oseltamivir is the active ingredient in an antiviral medicine used to treat or prevent influenza (flu). The European Medicines Agency claims that a medicine c
- June 2025, Statistics in Practice, Q6 (10 marks): 6 A scientist wishes to research the ratio of male badgers to female badgers living wild in the UK. To investigate this, the scientist intends to collect data i
- June 2024, Statistical Inference, Q7 (15 marks): 7 In January 2023, Michael was working at a financial advisory firm in the North West of England. He was interested in investigating whether people living in Ma
- June 2023, Statistics in Practice, Q6 (24 marks): 6 In field hockey, some fouls result in the awarding of a penalty corner. A player then has the opportunity to score a goal from the penalty corner. A study of
- June 2022, Statistics in Practice, Q3 (19 marks): 3 Klazine is a researcher interested in nutrition. She believes that involving a child in preparing their own meal affects what they choose to eat at that meal.
- November 2021, Statistical Inference, Q2 (7 marks): 2 Mohamed grows courgettes on his farm. He knows that the weights, in grams, of courgettes grown on other nearby farms are distributed N(175, 22.0 2). Mohamed d
- November 2021, Statistical Inference, Q3 (8 marks): 3 Stewart is planning a survey of 85 randomly sampled business leaders in his industry. He believes that most business leaders in his industry would support the
- November 2021, Statistics in Practice, Q6 (8 marks): 6 (a) State the definition of a statistic. (2) A biscuit manufacturer claims that each packet contains, on average, 200 g of its biscuits. Lionel wants to test
- November 2020, Statistical Inference, Q1 (7 marks): 1 The weights at 3 months of age, in kg, of baby girls born in the UK are modelled by the normal distribution N(5.8, 0.742). Rose has recently looked up the wei
- June 2019, Statistical Inference, Q1 (6 marks): 1 As part of an investigation into marine pollution in a particular area, the mercury content in the muscles of a sample of 36 dolphins is measured. These 36 do
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