A)Construct a 95% Confidence Interval for the Population Mean $\mu.$ Assume the Population Has a Normal
Distribution

a)Construct a 95% confidence interval for the population mean, $\mu.$ Assume the population has a normal
distribution. In a random sample of 26 computers, the mean repair cost was $143 with a standard deviation of
$35.
b)Suppose you did some research on repair costs for computers and found that the standard deviation is $\sigma$ σ = 35. Use the normal distribution to construct a 95% confidence interval for the population mean, $\mu.$ Compare
the results.