AP Statistics MCQ
AP Statistics Chapter 11
A social scientist wishes to determine the differences between the percentage of Los Angeles marriages and percentage of New York marriages that end in divorce in the first year. How large a sample (same for each group) should be taken to estimate the difference to within ±.07 at the 94% confidence level?
A social scientist wishes to determine the differences between the percentage of Los Angeles marriages and percentage of New York marriages that end in divorce in the first year. How large a sample (same for each group) should be taken to estimate the difference to within ±.07 at the 94% confidence level?
A social scientist wishes to determine the differences between the percentage of Los Angeles marriages and percentage of New York marriages that end in divorce in the first year. How large a sample (same for each group) should be taken to estimate the difference to within ±.07 at the 94% confidence level?
(A) 181
(B) 361
(C) 722
(D) 1083
(E) 1443
Answer: C
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