Best known for its testing program, ACT, inc.
also compiles data on a variety of issues in
ed...
Mathematics, 04.03.2021 20:40 potato3999
Best known for its testing program, ACT, inc.
also compiles data on a variety of issues in
education. In 2004 the company reported that
the national college freshman-
to-sophomore retention rate held steady at 74% over the previous four years. Consider random samples of 400 freshmen who took the ACT.
1. What are the mean and standard deviation of
the sampling distribution of size n = 400?
2.Is this sampling distribution approximately normal?
3. What is the probability that the freshman-to-sophomore retention rate is lower than 7 out of 102
Answers: 2
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