Listed in the accompanying data table are student evaluation ratings of courses and professors where a rating of 5 is for excellent Assume that each sample is a simple random sample obtained from a population with a normal distribution a Use the 93 course evaluations to construct a 99 confidence interval estimate of the standard deviation of the population from which the sample was obtained b Repeat part a using the 93 professor evaluations c Compare the results from part a and part b Click the icon to view the data table XX