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The president of a certain TV station claimed that the average rating of people watching their noontime teleserye in Manila is 60.5.A researcher randomly selected 25 people and asked them their favorite noontime teleserye. He computed the mean and obtained 65.8 with standard deviation of 15. Is there a reason to believe that the manager is correct? Use 0.01 as the level of significance.

A. State the null and alternative hypothesis.
B. Determine the test statistic,then compute its value.
C. Find the critical value and draw the critical region.
D. Draw a conclusion.​