Mathematics (AS & A Level) · Feb / March 2022 · Paper 62 · Question 3
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A random sample of 500 households in a certain town was chosen. Using this sample, a confidence interval for the proportion, p, of all households in that town that owned two or more cars was found to be 0.355 < p < 0.445. Find the confidence level of this confidence interval. Give your answer correct to the nearest integer. [5]
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