9.50. For a class of 100 students, the teacher takes the 10 students who perform poorest on...

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9.50. For a class of 100 students, the teacher takes the 10 students who perform poorest on the midterm exam and enrolls them in a special tutoring program. The overall class mean is 70 both on the midterm and final, but the mean for the specially tutored students increases from 50 to 60. Can we conclude thatthe tutoring program was successful?

Explain.

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