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Explanation of how to select the target parameters.

Financial incentives for college students.

A study reported in "Inside Higher Education News" (May, 2006) found that financial incentives can improve low-income college students' grades and retention. As part of their "Opening Doors" program, a Louisiana community college offered to pay students $1,000 per semester on condition that they maintain at least half-time enrollment and at least a 2.0 GPA.

a) About 61% of Opening Doors students enrolled full time as opposed to about 52% of traditional students. Identify the target parameter for this comparison.

b) The Mean GPA of Opening Doors students was 2.3 as compared to the mean GPA of 2.1 for traditional students. Identify the target parameter for this comparison.

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