plumiConfidence intervals: OCR A‑Level Further Maths questions
OCR A-Level Further Maths past-paper questions on 7.2 Confidence intervals, 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 3 questions on Confidence intervals, as a list
- June 2023, Statistics, Q7 (10 marks): A club secretary collects data about the time, T minutes, needed to process the details of a new 2 member. The mean of T is denoted by n. The variance of T is d
- November 2021, Statistics, Q4 (9 marks): A random sample of 160 observations of a random variable X is selected. The sample can be summarised as follows. x2 = n = 160 x = 2688 48 398 / / (a) Calculate
- November 2020, Statistics, Q1 (4 marks): The continuous random variable X has the distribution N(n, 30). The mean of a random sample of 8 observations of X is 53.1. Determine a 95% confidence interval
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