|. OBJECTIVE: 1. Use the steps in hypothesis testing in testing a single population mean. ||. PROBLEMS: 1. The mean and standard deviation for the weighted grades of a random sample of 16 college graduates were calculated to be 2.00 and 0.825. respectively. Is there a valid reason to believe the administrator's claim that the weighted mean of the students in the entire university is 2.25? Use 0.05 level of signicance. Solution: Step 1. Ha: Ha: Step 2. Test Statistic: (state the reason for choosing the test statistic) Step 3. Critical Region: Step 4. Computations: Step 5. Decision and Conclusion: Note: When doing the computations, round-off the values up to the 4'\" decimal place (if the value is more than 4 decimal places. For the nal answer, round off the value up to the 2'\" decimal place