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Assume that you want to construct a95% confidence interval estimate of a population mean. Find an estimate of the sample size needed to obtain the

Assume that you want to construct a95% confidence interval estimate of a population mean. Find an estimate of the sample size needed to obtain the specified margin of error for the95% confidence interval. The sample standard deviation is given below.

Margin of error=$5, standard deviation=$18

The required sample size is

nothing

.

(Round up to the nearest whole number asneeded.)

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