help please

Ho:[.l=18 Hazpels A sample of 48 provided a sample mean i = 17 and a sample standard deviation 5 = 4.3. u_u a. Compute the value of the test statistic (to 3 decimals). If your answer is negative, use minus 0 sign. I). Use the tdistribution table (Table 2 in Appendix B) to compute a range for the p-value. The pvalue is between .005 and .01 c 0 c. At CI = .05, what is your conclusion? p-Value is greater than or equal to 0.05, reject c 0 H o d. what is the rejection rule using the critical value? Reject H o if t is less than the negative critical value c a or t is I equal to the positive critical value C I o What is your conclusion? _@Ho l ' m The manager of an automobile dealership is considering a new bonus plan designed to increase sales volume. Currently, the mean sales volume is 13 automobiles per month. The manager wants to conduct a research study to see whether the new bonus plan increases sales volume. To collect data on the plan, a sample of sales personnel will be allowed to sell under the new bonus plan for a one-month period. a. Which form of the null and alternative hypotheses most appropriate for this situation. Ha=lns_ b. Comment on the conclusion when H 0 cannot be rejected. 0 No evidence that the new plan increases sales. c. Comment on the conclusion when H 0 can be rejected. l The research hypothesis II > 13 Is supported; the new plan increases sales. 3]