An officer with the Australian Electoral Office wants to estimate the proportion of retired voters who will need special election facilities.Suppose a sample of 400 retired voters was taken.If 150 need special election facilities,calculate a 90% confidence interval for the population proportion.

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The Answer of An officer with the Australian Electoral Office wants to estimate the proportion of retired voters who will need special election facilities.Suppose a sample of 400 retired voters was taken.If 150 need special election facilities,calculate a 90% confidence interval for the population proportion.

An Officer with the Australian Electoral Office Wants to Estimate