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Problem 5

8.4 Observed Significance Levels: p-Values

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Problem 7

Historically, the average height for males was believed to be 68 inches. A doctor believes the average height has increased over the last 100 years. He claims the average male is now 70 inches tall. A random sample of 50 men had an average height of 68.9 inches and a standard deviation of 2.8 inches. Use a 10% significance level and the p-value method to test the doctor’s claim.

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Problem 5

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