Question: For question 1 and 2. Use the 5 step method and discuss type 1 and type 2 error. 1. An article on CNN.com reports that

For question 1 and 2. Use the 5 step method and discuss type 1 and type 2 error. 1. An article on CNN.com reports that Americans are increasingly skimping on their sleep. A researcher wants to determine if Americans are sleeping less than the recommended 7 hours a night. He takes a random sample of 150 Americans and computes the average sleep time of 6.7 hours a night. The standard deviation is known to be 2.1 hours. The level of signicance is .01

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