We want to know if 2 different professors are teaching two different section of the same
statistics course differently. The following are the test scores for the 15 students from
section (A) and 15 students from section (B).
Section (A) 81 83 72 74 79 95 62 90 86 72 67 79 93 80 75
Section (B) 79 82 75 82 81 97 64 88 80 74 63 79 94 85 68
Use the sign test at 0.05 level of significance
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