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Write the null and alternative hypotheses you would use to test each of the following situations.

a) In the 1950s only about 40% of high school graduates went on to college. Has the percentage changed?

b) 20% of cars of a certain model have needed costly transmission work after being driven between 50,000 and 100,000 miles. The manufacturer hopes that a redesign of a transmission component has solved this problem.

c) We field-test a new-flavor soft drink, planning to market it only if we are sure that over 60% of the people like the flavor.

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Statistics and Probability, Statistics

Category:- Statistics and Probability
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