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A simple random sample with n=54 provided a sample mean of 24 and a sample standard...

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Statistics

A simple random sample with n=54 provided a sample mean of 24and a sample standard deviation of 4.3 .

a. Develop a 90% confidence interval for the population mean (to1 decimal).

b. Develop a 95% confidence interval for thepopulation mean (to 1 decimal).

c. Develop a 99% confidence interval for the population mean (to1 decimal).

What happens to the margin of error and the confidence intervalas the confidence level is increased?

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