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A car manufacturer claims that its new sedan will average better than 19 miles per gallon in the city. Assuming that a hypothesis test of
A car manufacturer claims that its new sedan will average better than 19 miles per gallon in the city. Assuming that a hypothesis test of the claim has been conducted and that the conclusion is to reject the null hypothesis, state the conclusion in nontechnical terms. Question content area bottom Part 1 A. There is not sufficient sample evidence to support the claim that the mean is less than 19 miles per gallon. B. There is not sufficient sample evidence to support the claim that the mean is greater than 19 miles per gallon. C. There is sufficient sample evidence to support the claim that the mean is less than 19 miles per gallon. D. There is sufficient sample evidence to support the claim that the mean is greater than 19 miles per gallon.In 1990, the average math SAT score for students at one school was 499. Five years later, a teacher wants to perform a hypothesis test to determine whether the average math SAT score of students at the school has changed from the 1990 mean of 499. Formulate the null and alternative hypotheses for a hypothesis test. Question content area bottom Part 1 A. H0: muequals499 HSubscript a
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