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2.5 O: Statistical hypothesis testing

2.5 O: Statistical hypothesis testing

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Question 22
52%

The chance of a webpage visitor clicking on a link is 0.15. Angela believes that increasing the font size for the link will increase the proportion of visitors that click on the link.

After increasing the font size a sample of 90 visitors is taken and 20 clicked on the link.

Stating your hypotheses clearly test, at the 5% level of significance, whether or not there is evidence to support Angela's belief.

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Markscheme

2.5 O: Statistical hypothesis testing Questions

  1. A Level
  2. /Maths
  3. /2.5 O: Statistical hypothesis testing

162 exam-style questions on AQA A Level Maths 2.5 O: Statistical hypothesis testing, covering 2.5.1 Language of hypothesis testing, 2.5.2 Hypothesis test for a binomial proportion, and 2.5.3 Hypothesis test for a Normal mean (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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