A Survey Asks A Random Sample Of 1500 Adults In Ohio

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A Survey Asks A Random Sample Of 1500 Adults In Ohio

if they support an increase in the state sales tax from 5% to 6%, with the additional revenue going to education. Let denote the proportion in the sample that say they support the increase. Suppose that 40% of all adults in Ohio support the increase. Reference: Ref 9-1 The probability that is more than 0.50 is Answers: A. 0.50. B. 0.1586. C. 0.4602. D. less than 0.0001. E. about 0.1.
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Z=(P*-P)/SD (.5-.4)/.0126=7.93 Z>7.93 -> less than .0001

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