Hasan F.

# some people want to comapre the proportion of high school boys that smoke cigarettes to the proportion of high school girls that smoke cigarettes.

some people want to comapre the proportion of high school boys that smoke cigarettes to the proportion of high school girls that smoke cigarettes. use the data below to test the claim that the proportion of boys that smoke is 5% bigger than the proportion for girls.

Smoke     girls         boys

yes          407         470

no            1451        1469

Christian C.

Find the proportion of girls who smoke. Then find 5% of that proportion and add it back to the proportion. If you get an answer equal to the proportion of boys who smoke, then the answer is yes.

Hint:

The proportion of girls who smoke is 407/(407+1451) and to find 5% of that number, multiply it by .05
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06/03/16

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