A sample of sizen = 94 is drawn from a normal population whose standard deviation is = 7.1. The sample mean isx = 35.33

(a) Construct a99.8% confidence interval for Round the answer to at least two decimal places.

A99.8% confidence interval for the mean is (___)< < (___)

(b) If the population were not approximately normal, would the confidence interval constructed in part (a) be valid?

Explain.The confidence interval constructed in part (a)(would/ would not)be valid since the sample size(is/ is not)large.