Back to campus, aobtain ACT, Inc. reported that 74% of 1644 randomly schosen college freshmen went back to college the following year. The study was stvalidated by type of college—public or personal. The retention rates were 71.9% among 505 students enrolled in public colleges and also 74.9% among 1139 students enrolled in exclusive colleges.

a)      Will the 95% confidence interval for the true nationwide retention price in exclusive colleges be larger or narrower than the 95% confidence interval for the retention rate in public colleges? Exsimple.

b)      Do you intend the margin of error for the overall retention price to be larger or smaller? Explain.

 

 




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Aug 18 2021| 02:11 PM |
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