# Question: a A statistics practitioner would like to estimate a population

a. A statistics practitioner would like to estimate a population mean to within 10 units. The confidence level has been set at 95% and σ = 200. Determine the sample size.

b. Suppose that the sample mean was calculated as 500. Estimate the population mean with 95% confidence.

b. Suppose that the sample mean was calculated as 500. Estimate the population mean with 95% confidence.

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