Description
At a large midwestern university, a
simple random sample of 100 entering freshmen in 1993 found that 20 of the
sampled freshmen finished in the bottom third of their high school class.
Admission standards at the university were tightened in 1995. In 1997, a
simple random sample of 100 entering freshmen found that only 10 finished in
the bottom third of their high school class. Let p1 and p2 be
the proportions of all entering freshmen in 1993 and 1997, respectively, who
graduated in the bottom third of their high school class. |
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