Mathematics (AS & A Level) · May / June 2024 · Paper 63 · Question 2
9709
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The widths, w cm, of a random sample of 150 leaves of a certain kind were measured. The sample mean of w was found to be 3.12 cm. Using this sample, an approximate 95% confidence interval for the population mean of the widths in centimetres was found to be [3.01, 3.23].
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2(a)[3]
2(b)[1]
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