Question: A simple random sample withn=52 provided a sample mean of22.0and a sample standard deviation of4.3. a.Develop a90% confidence interval for the population mean (to 1

A simple random sample withn=52 provided a sample mean of22.0and a sample standard deviation of4.3.

a.Develop a90% confidence interval for the population mean (to 1 decimal).

( , )

b.Develop a95%confidence interval for the population mean (to 1 decimal).

( , )

c.Develop a99%confidence interval for the population mean (to 1 decimal).

( , )

d.What happens to the margin of error and the confidence interval as the confidence level is increased?

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