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Suppose a 95% confidence interval for the mean salary of college graduates in a town in...

Suppose a 95% confidence interval for the mean salary of college graduates in a town in Mississippi is given by [$36,815, $43,185]. The population standard deviation used for the analysis is known to be $13,000. [You may find it useful to reference the z table.] a. What is the point estimate of the mean salary for all college graduates in this town? b. Determine the sample size used for the analysis. (Round "z" value to 3 decimal places and final answer to the nearest whole number.)

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TOPIC:Finding the best point estimate of the population mean and the required sample size.

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