\f1 70 14 95 29 95 4 50 23 60 14 80 a. Using a two-tailed test with an alpha level of 0.01 run the analysis in Excel or any other software package and produce the output below. You only need to report the key statistic and conclude whether the relationship between the two variables is significant or not. (6 marks) b. Calculate the coefficient of determination? (2 marks) 3. A researcher wants to determine whether there is a significant difference in anxiety levels before and after the attendance of a meditation intervention programme. Anxiety levels were measured before attending the intervention programme and again 4 weeks after the completion. The results are found in the table below. Before After intervention intervention 28 15 15 12 6 7 28 19 22 15 45 38 32 26 9 5 2 4 17 15 a. Perform an appropriate hypothesis test at the 5% significance level to determine whether there is a significant difference in anxiety scores before and after the intervention programme. Show all your manual calculations, hypotheses, decision rules, interpretation and conclusion. (14 marks)