need answers for D-E

S Exercise 09.09 (Algorithmic) Consider the following hypothesis test: Ho: M 2 20 Ha: M

O Exercise 09.09 (Algorithmic) Consider the following hypothesis test: Ho: 20 H a: 20 i A sample of 40 provided a sample mean of 19.5. The population standard deviation is 1.8. a. Compute the value of the test statistic (to 2 decimals). If your answer is negative, use minus "-" sign. -1.75 b. What is the p-value (to 3 decimals)? 0.0395 c. Using a = .05, can it be concluded that the population mean is less than 20? Yes sign. d. Using a = .05, what is the critical value for the test statistic (to 3 decimals)? If your answer is negative, use minus What is the rejection rule using the critical value? Reject H O if z Select v e. What is your conclusion? Reject H O if z is Select the critical value.