Mathematics 9709/71 — October/November 2018

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

questions

marks

minutes

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

Q1Sampling and EstimationFree sample

The standard deviation of the heights of adult males is $7.2\text{ cm}$ . The mean height of a sample of 200 adult males is found to be $176\text{ cm}$ .

(i)

Calculate a $97.5\%$ confidence interval for the mean height of adult males.

(ii)

State a necessary condition for the calculation in part (i) to be valid.

The rest of this paper

6 more questions

Q2Hypothesis Tests4M
Q3Sampling and Estimation4M
Q4The Poisson Distribution · Linear Combinations of Random Variables8M
Q5Linear Combinations of Random Variables9M
Q6Continuous Random Variables9M
Q7Hypothesis Tests · Sampling and Estimation12M

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