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You are given the sample mean and the population standard deviation. Use this information to construct...

You are given the sample mean and the population standard deviation. Use this information to construct the​ 90% and​ 95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. From a random sample of 71 ​dates, the mean record high daily temperature in a certain city has a mean of 85.80 degrees°F. Assume the population standard deviation is 14.03 degrees°F.

The​ 90% confidence interval is ​(?​,?​). ​(Round to two decimal places as​ needed.)

Math   Statistics-And-Probability   
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