Question: In a random sample of 26 laptop computers, the mean repair cost was $127 with a standard deviation of $33. Assume the population has a

In a random sample of 26 laptop computers, the mean repair cost was $127 with a standard deviation of $33. Assume the population has a normal distribution.

A) Construct a 95% confidence interval for the population mean, .

B) Suppose you did some research on repair costs for laptop computers and found that the standard deviation is = 33. Use the normal distribution to construct a 95% confidence interval for the population mean, .

C) Compare the results. Round to the nearest cent.

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1. Background knowledge of the subject and

4. What specific changes in the environment have taken place in relation to the information we have collected?

2. The purpose of the acquisition of the information.