Conduct 3 independent sample t-tests for each possible pair of sections. (Though we will see later that it might not be appropriate, retain the significance level α = 0.05 .) Report the P-value (accurate to 4 decimal places) for each pairwise comparison. Compare sections 1 and 2, 1 and 3, and 2 and 3 and lastly reveal what pairs of groups have statistically significantly different means if there are any.
80.1 49 68.7
75.2 69.4 80.1
83.8 85.1 70.4
72.1 46.4 83.6
65.4 88.7 72.4
81 62.2 76.9
73.2 68 79.5
85.8 63.1 86.1
89.5 73.2 78.7