A national health study reported that the proportion of students with elevated blood pressure is 0.15. The principalof a local high school believes that the proportion of students in the school with elevated blood pressure is greaterthan 0.15. If a large random sample is used, which of the following is the most appropriate test to investigate theprincipal’s belief?(A) A z-test for a proportion(B) A z-test for a difference between two proportions(C) A chi-square test for homogeneity of proportions(D) A t-test for a mean(E) A matched-pairs t-test

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