A highway patrol officer believes that the average speed of cars traveling over a certain stretch of
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A highway patrol officer believes that the average speed of cars traveling over a certain stretch of highway exceeds the posted limit of 55 mph. The speeds of a random sample of 200 cars were recorded. Do these data provide sufficient evidence at the 1% significance level to support the officer’s belief? What is the p-value of the test? (Assume that the standard deviation is known to be 5.)
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55 55 Pvalue P Z 226 ...View the full answer
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Related Book For
Statistics For Management And Economics Abbreviated
ISBN: 9781285869643
10th Edition
Authors: Gerald Keller
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