OBJECTIVE: Use the steps in hypothesis testing in testing a single population mean.

2. Students in a certain university are said to finish their undergraduate theses on the average of one year and a standard deviation or = 2 months. A study of 25 students took an average of 10.5 months to finish their theses. Test the hypothesis that the true mean is one year at 1 percent level of significance. Solution: Step 1. H0: H3: 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 (ifthe value is more than 4 decimal places. For the nal answer, round off the value up to the 2"\" decimal place