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9709/73

Mathematics 9709/73 — May/June 2010

Cambridge A-Level · Probability & Statistics 2 · worked solutions for every part, with the mark scheme

7
questions
50
marks
75
minutes

Topics Hypothesis Tests · The Poisson Distribution · Sampling and Estimation · Continuous Random Variables · Linear Combinations of Random Variables

Q15MHypothesis TestsFree sample

At the 2009 election, 13\frac{1}{3} of the voters in Chington voted for the Citizens Party. One year later, a researcher questioned 20 randomly selected voters in Chington. Exactly 3 of these 20 voters said that if there were an election next week they would vote for the Citizens Party. Test at the 2.5% significance level whether there is evidence of a decrease in support for the Citizens Party in Chington, since the 2009 election.

The rest of this paper

6 more questions
  • Q2Hypothesis Tests5M
  • Q3Sampling and Estimation6M
  • Q4Hypothesis Tests · The Poisson Distribution6M
  • Q5Continuous Random Variables8M
  • Q6Linear Combinations of Random Variables9M
  • Q7The Poisson Distribution11M
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