11
QuizMultiple Choice

Unit Test — Unit test

Question 11 • Probability and Statistics with Applications Honors Sem-2-FL-1210300 (2024-2025)

A principal of a large high school wants to estimate the true proportion of high school students who use the community’s public library. To do so, he selects a random sample of 50 students and asks them if they use the community’s public library. The 95% confidence interval for the true proportion of all students who use the community’s public library is 0.25 to 0.34. If the principal had used a sample size of 200 students rather than 50 students, how would the length of the second interval compare to the original interval?

Answer
A
It would be half as wide.
B
It would be twice as wide.
C
It would be one-fourth as wide.
D
It would be four times as wide.
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