A researcher was interested in finding out whether Moral Reasoning could be enhanced if students were taught using Moral Dilemmas. Subjects were given a Moral Reasoning Test before the treatment (using moral dilemmas) and after the treatment and the results are shown in Table 1 below. Refer to Table 1 and Table 2 and answer the following questions: Table 1: Mean Moral Reasoning Score Before and After Teaching Using Moral Dilemmas N Mean Std. Deviation Std. Error Mean Pretest 30 18.50 5.33 0.97 Posttest 30 23.86 4.75 0.87 a) State 1 null hypothesis and 1 alternative hypothesis - 2 marks b) Why is the paired t-test used? - 3 marks c) What can you conclude from the Table 1 and Table 2? - 5 marks QUESTION 6 [5 MARKS] Parents Not Divorced Parents Divorced N Mean Std. Deviation N Mean Std. Deviation Sign Score on Anxiety Test 49 21.49 2.6 34 22.70 4.3 0.07 Score on Depression Test 49 15.67 3.1 34 17.90 4.6 0.03 The table above shows the results of a study which compared the Anxiety and Depression levels of students from families whose parents are divorced and whose parents are not divorced. Briefly describe the results of the study - 5 marks QUESTION 7 [10 MARKS] A study was conducted to determine the relationships between spatial reasoning, memory, metacognition, mathematical ability and verbal reasoning. The sample consisted of 80 males and 80 female 17 year old students. The Table 1 below shows a correlation matrix between the five variables. Based on the table answer the following questions: Table 2 : Paired t Test Mean Std. Deviation Std. Error Mean Lower Upper t df Sig. (2 tailed) Pretest -5.36 2.90 0.62 -6.65 -4.08 -8.66 2