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The average weight of men in the United States, aged 20 years or older, is 192.8 pounds and the standard deviation is 34.4 pounds. a)

The average weight of men in the United States, aged 20 years or older, is 192.8 pounds and the standard deviation is 34.4 pounds. a) Calculate the z score for a man in the United States who weighs 164.3 pounds. (Round your answer to 2 decimals.) b) Calculate the z score for a man in the United States who weighs 236.6 pounds. (Round your answer to 2 decimals.) c) What proportion of men in the United States weigh between 164.3 and 236.6 pounds? (Round your answer to 4 decimals.)

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