Answer Happy

The mean cleanup and redecorating time for a one-bedroom student apartment at campus housing is 8.6 hours. The time for the cleanup and redecorating process follows the normal distribution. The campus housing administration instituted a "fee and fine system” that encourages students to clean their apartments when they vacate them. This should shorten the cleanup and redecorating time. A sample of 28 apartments had a mean cleanup and redecorating time of 8.25 hours with a standard deviation of 1.4 hours. Does use of the "fee and fine system" decrease the cleanup and redecorating time? Follow a hypothesis testing procedure using the 0.05 significance level. a. What are the null and alternate hypotheses? (2 points) Ho: (Click to select) (Click to select) 8.6 H1: (Click to select) (Click to select) 8.6 b. What is the level of significance? (1 point) (Round your answer to 2 decimal places.) c. Compute the value of the test statistic? (2 points) (Round your answer to 2 decimal places. Negative values should have a minus sign in front of them) d. Determine the p-value (2 points) (Round your final answer to 4 decimal places.) e. What is your decision regarding the null hypothesis? (1 point) Fail to reject the null. Reject the null. f. Interpret the result. (2 points)