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Three students took a statistics test before and after coaching, but coaching did not effect the...

Three students took a statistics test before and after coaching, but coaching did not effect the scores of students i.e mean change in scores is zero. Their scores are as follows:

Students

A

B

C

Before

71

88

63

After

70

89

60

The value of t-test statistic for matched pairs is

chooes

8.66

0.866

-0.866

-8.66
Math   Statistics-And-Probability   
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