CAIE S2 2024 June — Question 4

Exam BoardCAIE
ModuleS2 (Statistics 2)
Year2024
SessionJune
TopicHypothesis test of binomial distributions
TypePerform one-tailed hypothesis test

4 In this question you should not use an approximating distribution.
At an election in Menham last year, \(24 \%\) of voters supported the Today Party. A student wishes to test whether support for the Today Party has decreased since last year. He chooses a random sample of 25 voters in Menham and finds that exactly 2 of them say that they support the Today Party. Test at the 5\% significance level whether support for the Today Party has decreased.