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A simple random sample withn=54provided a sample mean of22.0and a sample standard deviation of 4.4. Develop a90%confidence interval for the population mean (to 1 decimal).

A simple random sample withn=54provided a sample mean of22.0and a sample standard deviation of 4.4.

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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