x

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$$nple of

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$=$

$3$

$6$

$$freshmen is selected to participate in a new

$4$

$-$

hour training program designed to improve study skills. To

fectiveness of the new program, the sample was compared with the rest of the freshman class. The mean score on the

he entire freshman class was

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$7$

$4$

$,$

$$while scores for the students in the new program are shown below. Based on this

data, can we say the training program worked?

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$5$

$$points

$)$