Given the following hypotheses: H0: 12 H1: > 12 A random sample of 10 observations is selected from a normal population. The sample mean was 15 and the sample standard deviation 5.0. Using the 0.010 significance level: a. State the decision rule. (Round your answer to 3 decimal places.) Reject H0 if t > b. Compute the value of the test statistic. (Round your answer to 3 decimal places.) Value of the test statistic c. What is your decision regarding the null hypothesis? d. Reject or Cannot Reject Ho? e. There is sufficient or insufficient evidence to conclude that the population mean is greater than 12