You sample 36 students to find out how many hours they spent online last week. Your sample mean is 46. The population standard deviation, sigma, is 7.4. What is the 95% confidence interval for this...

You sample 36 students to find out how many hours they spent online last week. Your sample mean is 46. The population standard deviation, sigma, is 7.4. What is the 95% confidence interval for this sample mean? Keep at least three decimal places on any intermediate calculations, then give your answer rounded to 1 decimal place, with the lower end first then upper.