Confidence interval for the proportion of us

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In a survey of 1000 randomly selected adults in the United States, participants were asked what their most favorite and what their least favorite subject was when they were in school (Associated Press, August 17, 2005). In what might seem like a contradiction, math was chosen more often than any other subject in both categories! Math was chosen by 230 of the 1000 as the favorite subject, and it was also chosen by 370 of the 1000 as the least favorite subject.

a. Construct a 95% confidence interval for the proportion of U.S. adults for whom math was the favorite subject in school.

b. Construct a 95% confidence interval for the proportion of U.S. adults for whom math was the least favorite subject.

Reference no: EM131820622

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