The Test Scores for a Statistics course are given in the Excel below.

The data (X1, X2, X3, X4) are for each student.

X1 = score on exam #1

X2 = score on exam #2

X3 = score on exam #3

X4 = score on final exam

Your professor wants to know if all tests are created equal.

At a 5% level of Significant,run a test to determine if the mean difference between the test scores is the same.

EXAM1 EXAM2 EXAM3 FINAL

73 80 75 65.86667

93 88 93 80.16667

89 91 90 78

96 98 100 84.93333

73 66 70 61.53333

53 46 55 43.76667

69 74 77 64.56667

47 56 60 49.83333

87 79 90 75.83333

79 70 88 71.06667

69 70 73 61.1

70 65 74 61.1

93 95 91 79.73333

79 80 73 65.86667

70 73 78 64.13333

93 89 96 83.2

78 75 68 63.7

81 90 93 79.3

88 92 86 76.7

78 83 77 68.9

82 86 90 76.7

86 82 89 75.83333

78 83 85 75.83333

76 83 71 64.56667

96 93 95 83.2

• A.The mean difference between the test scores is thesame because the p-value =0.0052
• B.The mean difference between the test scores is the not same because the p-value =0.0052
• C.The mean difference between the test scores is the not same because the p-value =0.9948
• D.The mean difference between the test scores is thesame because the p-value =0.9948