The weights, in kilograms, of a random sample of eight 16-year old males are given below. 58.9 63.5 62.7 59.4 66.9 68.0 60.4 68.2 --- --- --- --- --- --- --- --- Find unbiased estimates of the population mean and variance of the weights of all 16-year old males.

Mathematics 9709/72 — October/November 2016

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

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

Q13MSampling and EstimationFree sample

The weights, in kilograms, of a random sample of eight 16-year old males are given below.

58.9	63.5	62.7	59.4	66.9	68.0	60.4	68.2

Find unbiased estimates of the population mean and variance of the weights of all 16-year old males.

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