plumiStatistical hypothesis testing: WJEC A‑Level Maths questions
Every WJEC A-Level Maths exam question on S.5 Statistical hypothesis testing, 2018–2025, with its mark scheme and examiner’s report.
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All 13 questions on Statistical hypothesis testing, as a list
- Summer 2025, Unit 4, Q3 (8 marks): 3. A city councillor is investigating the decline in the number of bus drivers in the city. During her research, she finds an article claiming that delivery com
- Summer 2025, AS Unit 2, Q3 (11 marks): 3. Martin is designing a new question for a multiple-choice quiz. The question has three options, only one of which is correct. Martin designs the question to b
- Summer 2024, Unit 4, Q3 (8 marks): 3. Awena has a large data set of body measurements, and she wants to investigate relationships between body dimensions. In this particular investigation, she is
- Summer 2024, AS Unit 2, Q4 (11 marks): 4. A company produces sweets of varying colours. The company claims that the proportion of blue sweets is 13.6%. A consumer believes that the true proportion is
- Summer 2023, Unit 4, Q5 (7 marks): 5 A medical researcher is investigating possible links between diet and a particular disease. She selects a random sample of 22 countries and records the averag
- Summer 2023, AS Unit 2, Q5 (8 marks): 5 A doctor knows that 34% of his patients currently take too little exercise. He believes he can reduce this proportion by putting patients through a behaviour
- Summer 2022, Unit 4, Q5 (8 marks): 5 A government statistician wishes to investigate whether there is positive correlation between the variables Average score in the National Reading Test and Ave
- Summer 2022, AS Unit 2, Q5 (8 marks): 5 A company, Run4Lyfe, sponsors an athletic event. The organisers of the event claim that 70% of the participants know the name of the sponsoring company. Run4L
- Summer 2019, Unit 4, Q4 (12 marks): 4 A company produces kettlebells whose weights are normally distributed with mean 16 kg and standard deviation 0.08 kg. a) Find the probability that the weight
- Summer 2019, Unit 4, Q5 (9 marks): 5 A bowling alley manager in the UK is concerned about falling revenues. He collects data from the United States, hoping to use what he finds to revive his busi
- Summer 2019, AS Unit 2, Q2 (10 marks): 2 Bethan owns a clothing company. Records of past sales show that 30% of people who come into her store buy at least one item of clothing. She would like to inc
- Summer 2018, Unit 4, Q5 (8 marks): 5 Rebecca is a farmer who is monitoring prices for products to use on her farm. She records the prices of two products made from different grains, wheat and oat
- Summer 2018, AS Unit 2, Q4 (9 marks): 4 Edward can correctly identify 20% of types of wild flower. He studies some books to see if he can improve how often he can correctly identify types of wild fl
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