Unformatted text preview: the students in the two schools based on these samples. 3. A study was conducted to determine whether remediation in basic mathematics enabled students to
be more successful in an elementary statistics course. Samples of final exam scores were taken from
students who had remediation and from students who did not. Here are the results of the study:
Sample size
Mean Exam Grade
Std Dev for Exam Remedial
100
83.0
2.76 Nonremedial
40
76.5
4.11 Test, at the 5% level, whether the remediation helped the students to be more successful....
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 Spring '08
 HAFEEZ

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