Question: Simple random sampling was used to obtain a sample of n = 50 elements from a population of N = 800. The sample mean was

Simple random sampling was used to obtain a sample of n = 50 elements from a population of N = 800. The sample mean was = 215, and the sample standard deviation was found to be s = 20.

a. Estimate the population mean.

b. Estimate the standard error of the mean.

c. Develop an approximate 95% confidence interval for the population mean.

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