Mathematics (AS & A Level) · Oct / Nov 2023 · Paper 63 · Question 2
9709
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In a survey of 300 randomly chosen adults in Rickton, 134 said that they exercised regularly. This information was used to calculate an !% confidence interval for the proportion of adults in Rickton who exercise regularly. The upper bound of the confidence interval was found to be 0.487, correct to 3 significant figures. Find the value of ! correct to the nearest integer. [4]
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