1. A university administrator is interested in the effect that the marine biology curriculum has on student knowledge. A random sample of 12 incoming marine biology majors is selected. During their first day of college, a pretest is given to evaluate their prerequisite knowledge of marine biology. Four years later, after completing their degrees, a post test is given to the same 12 students to evaluate their knowledge of marine biology. Scores, measured in points out of 72, are shown in the table below. a. Estimate, using a 99% confidence interval, the true mean difference in the improvement in scores for all marine biology majors who complete degrees at this university- Be sure to list the assumptions on which the estimate is based. b. Is there statistically convincing evidence that the university's marine biology curriculum has an effect on increasing student knowledge? USe your interval to justify your answer. What Ha would be uSed for this test? What would the p-value be for this test? What would the decision be? [)0 both the p-value and interval suggest the same conclusion? Explain