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#3 The weights of professional wrestlers are normally distributed with a mean of 270 pounds and a standard deviation of 25 pounds. What is the

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#3 The weights of professional wrestlers are normally distributed with a mean of 270 pounds and a standard deviation of 25 pounds. What is the probability that a randomly chosen wrestler weighs (a) less than 280 pounds? (b) between 280 and 315 pounds? K

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