plumiThe normal distribution: WJEC A‑Level Maths questions
WJEC A-Level Maths past-paper questions on 4.2 The normal distribution, 2018–2025, with mark schemes and examiner’s reports where available. Add MadAsMaths questions to your practice, or browse them separately by topic and difficulty.
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All 7 questions on The normal distribution, as a list
- Summer 2025, Unit 4, Q4 (16 marks): 4. Collectable football cards come in packs. The masses, in grams, of the packs are normally distributed with mean 28.3 and standard deviation 0.3. (a) Calculat
- Summer 2024, Unit 4, Q4 (21 marks): 4. Jake works for a parcel delivery company. The masses, in kilograms, of parcels he delivers are normally distributed with mean 2.2 and standard deviation 0.3.
- Summer 2023, Unit 4, Q4 (15 marks): with mean μ and variance σ2. 0 4 A bakery produces large loaves with masses, in grams, that are normally distributed It is found that 11% of the large loaves we
- Summer 2022, Unit 4, Q1 (3 marks): 1 An interview process involves three stages of selection. The first stage involves completing an aptitude test. The scores in the aptitude test are on a contin
- Summer 2022, Unit 4, Q4 (13 marks): 4 In a driving simulator, the stopping distances, in metres, for cars travelling at 20 mph and 30 mph can be modelled by normal distributions with means and sta
- 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 2018, Unit 4, Q4 (8 marks): 4 Arwyn collects data about household expenditure on food. He records the weekly expenditure on food for 80 randomly selected households from across Wales. Cost
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