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an educator takes a random sample of theird graders in a large school district and divides...

an educator takes a random sample of theird graders in a large school district and divides them into two reading groups . the mean score on an exam of the 18 students in the new activities group was 51.72 with a standard deviation of 11.71. the mean score of the 20 students in the traditional group was 41.8 with a standerard deviation of 17.45. is this evideenc ethat the students in the new actibities group have a hugher reading score use a=0.01

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