Homework2: Problem 2 Previous Problem Problem List Next Problem (10 points) The time needed for college students to complete a certain paper-and-pencil maze follows a normal distribution with a mean of 30 seconds and standard deviation of 2.2 seconds. You wish to see if the mean time is changed by vigorous exercise, so you have a group of 20 college students exercis vigorously for 30 minutes and then complete the maze. It takes them an average of =29.7 seconds to complete the maze. Use this information to test t hypotheses Ho : p = 30 H : # 30 Conduct a test using a significance level of a = 0.01. (a) The test statistic (b) The positive critical value, z* = (c) The final conclusion is A. There is not sufficient evidence to reject the null hypothesis that = 30. OB. We can reject the null hypothesis that 30 and accept that 30. =