Assume that two dependent samples have been randomly selected from normally distributed populations. 18) Five students took a math test before and...

Assume that two dependent samples have been randomly selected from normally distributed populations.18) Five students took a math test before and after tutoring. Their scores were as follows. 18) Subject A B C D EBefore 71 66 75 78 66 After 75 75 73 81 78Using a 0.01 level of significance, test the claim that the tutoring has an effect on the math scores.