How to solve the problem using EXCEL

B) 94.12 ,105.88

C) 92.272, 107.728

Problem 1: A random sample of 81 students at a local university showed that they work an average of 100 hours per month. The population standard deviation is known to be 27 hours. Answer the 3 questions below using EXCEL Formula. 1) What is the point estimate for the mean hours per month all students at the university work 100 2) 95% confidence interval is ) 3) 99% confidence interval is )