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StatsTest4

# StatsTest4 - Name Statistics Probability Test#4(Chapter 18...

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Name: ________________________ Show All Work!!! 1. A state’s Department of Education reports that 12% of the high school students in that state attend private high schools. The State University wonders if the percentage is the same in their applicant pool. Admissions officers plan to check a random sample of the over 10,000 applications on file to estimate the percentage of students applying for admission who attend private schools. a. They actually select a random sample of 450 applications, and find that 46 of those students attend private schools. Create the confidence interval. b. Interpret the confidence interval in this context c. If we increased the confidence level, would the Margin of Error increase or decrease? Please explain your answer. d. Should the admissions officers conclude that the percentage of private school students in their applicant pool is lower than the statewide enrollment rate of 12%? Explain

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2. It is generally believed that nearsightedness affects about 12% of children.
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StatsTest4 - Name Statistics Probability Test#4(Chapter 18...

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