The waiting times in minutes of a random sample of 20 people

Last updated: 3/27/2024

The waiting times in minutes of a random sample of 20 people at a bank have a sample standard deviation of 4 7 minutes Construct a confidence interval for the population variance o and the population standard deviation Us a 90 level of confidence Assume the sample is from a normally distributed population What is the confidence interval for the population variance o Round to one decimal place as needed