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A researcher selected a sample of 50 residents from each of 3 different cities to determine if they were willing to participate in a medical experiment. At a=.05, test the claim that the proportions who will participate are equal
reisdents city 1 city 2 city 3will participate 20 12 22will not " 30 38 28total 50 50 50
a)there is not evidence to reject the claim that the proportions are equal because the test value 4.861<5.991b)there is evidence tp reject the claim that the proportions are equal because the test value 12.592>1.042c)there is evidence to reject the claim that the proportions are equal because the test value 5.991>.4861d)there is evidence to reject the claim that the proportions are equal because the test value 5.991>1.042
which of the following assumptions is NOT made for the F test for comparing 3 or more means?
a)the population from which the samles were obtained must be normally distributedb)the samples must be independent of each otherc)the sample sizes must be equald)the variances of the population must be equal
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