The following marks represent the scores of 20 students in a General Education Statistics course involving hundreds of students. 75 45 67 88 90 78 83 89 74 68 44 73 84 91 77 56 64 55 79 72 It is required to test the hypothesis that the mean score is 69 against that it is not at 5% level of significance. State (a) critical value for this test (b) the p-value for the test (c) what decision should be made \"accept H0\" or \"reject H1\" Solution (a) critical value for this test Given a=0.05, the critical value is t(0.025,df=n- 1=19)=2.09 (check student t table).