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A tutor claimed that getting trained by her will boost scores for an exam. If the before and after scores for 12 students are as

A tutor claimed that getting trained by her will boost scores for an exam. If the before and after scores for 12 students are as shown below, can we say that the tutoring helped using the t-test for paired samples? Use a confidence level of 95%.

13411337
13541377
13591390
13871403
13961410
14031416
14161416
14251419
14311423
14341437
14351438
14351445

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