Consider the following hypothesis test: Ho: u _ 20 Hai u

Consider the following hypothesis test: H o: 20 H a: < 20 A sample of 45 provided a sample mean of 19.5. Th population standard deviation is 2. a. Compute the value of the test statistic (to 2 decimals). If your answer is negative, use minus " " - sign. b. What is the p-value (to 3 decimals)? c. Using a = .05, can it be concluded that the population mean is less than 20? Select v d. Using a = Suhat 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? - sign. Reject H O if z select v e. What is your conclusion? Reject H O if z is Select v the critical value.