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Question Help * t free lunch, which If stratifled random sampling with proportional allocation is used to select a One is the percentage of the student body that is eligible for free and lunches. The top 100 schools, grouped according to their percent free lunch, is as follows. sample of 25 high schools, how many would be selected from the stratum with a percent-free-lunch v alue of 40 sx? Round up to the nearest integer.) Percent free Number of top 100 lunch (x) ranked high schools 45 19 12 10s x <20 20s x<30 30 s x <40 40s x 17 Enter your answer in the answer box and then click Check Answer. Clear All All parts showing
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Answer #1

here as proportion of percent free lunch with are greater then or equal to 40 =17%

hence number of percent free lunch value of 40<=x from sample =np=25*0.17=4.25~ 5

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