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2.5 Statistical Hypothesis Testing

2.5 Statistical Hypothesis Testing

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Question 35
46%

Andy plays tennis. The probability that Andy will get one of his serves in court is 60%.

ai.

Andy serves 20 times. Find the probability Andy gets exactly 15 serves in court.

[1]
aii.

Andy serves 20 times. Find the probability more than 15 of the serves will be in court.

[2]
b.

Andy's coach thinks that the probability of Andy getting a serve in court has changed. Andy serves 50 times in a set and 35 are in court. Stating your hypothesis clearly, test the coach's claim at the 10% significance level.

[4]
Markscheme

2.5 Statistical Hypothesis Testing Questions

  1. A Level
  2. /Maths
  3. /2.5 Statistical Hypothesis Testing

316 exam-style questions on OCR A Level Maths 2.5 Statistical Hypothesis Testing, covering 2.5.1 The language of hypothesis testing, 2.5.2 Hypothesis test for a binomial proportion, 2.5.3 Inference and significance level, 2.5.4 Sample mean as a random variable (A-level only), 2.5.5 Hypothesis test for the mean of a normal distribution (A-level only), 2.5.6 Pearson's product-moment correlation coefficient, and 2.5.7 Hypothesis test using Pearson's coefficient (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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