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A poll of 1021 U.S. adults split the sample into four age​ groups: ages​ 18-29, 30-49,​...

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A poll of 1021 U.S. adults split the sample into four age​groups: ages​ 18-29, 30-49,​ 50-64, and​ 65+. In the youngest age​group, 60​% said that they thought the U.S. was ready for a woman​president, as opposed to 37​% who said​ \"no, the country was not​ready\" (3% were​ undecided). The sample included 255​18- to​29-year olds.

​a) Do you expect the 90% confidence interval for the trueproportion of all​ 18- to​ 29-year olds who think the U.S. is readyfor a woman president to be wider or narrower than the

90

​%

confidence interval for the true proportion of all U.S.​adults?

​b) Construct a

90

​%

confidence interval for the true proportion of all​ 18- to​29-year olds who believe the U.S. is ready for a womanpresident.

​a) The

90

​%

confidence interval for the true proportion of​ 18- to​ 29-yearolds who think the U.S. is ready for a woman president will beabout

â–¼

twice

equally

four times one-fourth one-half as wide as the 90% confidenceinterval for the true proportion of all U.S. adults who thinkthis.

​b) The 90% confidence interval is ( % , % )

.​(Round to one decimal place as​ needed.)

Answer & Explanation Solved by verified expert
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AnswerGiven thatA poll of 1021 US adults split the sample into four agegroups ages 1829 3049 5064 and 65In the youngest age group 60 said that they thought the USwas ready for a woman president as opposed to 37 who said nothe country was not readya Herewe need to find 90 confidence interval for the trueproportion of all 18 to 29year olds who think the US    See Answer
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