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Hypothesis Testing

Hypothesis Testing

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Question 14

Marcus works in a factory. The probability that an item Marcus inspects is faulty is 40%.

ai.

Marcus inspects 20 items. Find the probability that exactly 10 of the items are faulty.

[1]
aii.

Marcus inspects 20 items. Find the probability that more than 10 of the items are faulty.

[2]
b.

Marcus's manager thinks that the probability of an item being faulty has changed. Marcus inspects 20 items from a delivery and 14 are faulty. Stating your hypothesis clearly, test the manager's claim at the 10% significance level.

[4]
Markscheme

Hypothesis Testing Questions

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

33 exam-style questions on Edexcel AS 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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