OCR S2 2007 June — Question 3

Exam BoardOCR
ModuleS2 (Statistics 2)
Year2007
SessionJune
TopicHypothesis test of binomial distributions
TypeState test assumptions or distributions

3 The proportion of adults in a large village who support a proposal to build a bypass is denoted by \(p\). A random sample of size 20 is selected from the adults in the village, and the members of the sample are asked whether or not they support the proposal.
  1. Name the probability distribution that would be used in a hypothesis test for the value of \(p\).
  2. State the properties of a random sample that explain why the distribution in part (i) is likely to be a good model.
    \(4 X\) is a continuous random variable.