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Hypothesis Testing

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Question 65

The chance of getting a 3 on a fair spinner is 12\displaystyle \frac{1}{2}21​. The spinner is spun 8 times.

ai.

Find the probability that the spinner lands on 3 exactly 2 times.

[1]
aii.

Find the probability that the spinner lands on 3 more than 4 times.

[2]
b.

Alex believes that the spinner is not fair and the chance of the spinner landing on 3 is greater than 12\displaystyle \frac{1}{2}21​. To test this claim she spins the spinner 20 times and the spinner lands on 3 14 times. Stating your hypotheses clearly, test Alex's claim at the 5% significance level.

[4]
Markscheme

Hypothesis Testing Questions

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

153 exam-style questions on Edexcel A Level Maths Hypothesis Testing, covering 7.1 Hypothesis Testing, 7.2 Finding Critical Values, 7.3 One-Tailed Tests, and 7.4 Two-Tailed Tests. Each one has a worked solution and a mark scheme showing where the marks go.

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