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the mean weight for 6 year old american boys is about 50 with a standard deviation...

the mean weight for 6 year old american boys is about 50 with a standard deviation of 8 pounds. for 13 year old boys mean is about 95 pounds with a standard deviation of 15 pounds. assume the weights are distributed nornally for thjs problem. what is the probability that two random 6 year old boys will together weigh more than a random thirteen year ild boy?
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