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OpenStudy (youngster):
Please Help! Assume the heights of high school basketball players are normally distributed. For boys the mean is 74 inches with a standard deviation of 4.5 inches, while girl players have a mean height of 70 in and standard deviation 3 in. At a mixed 2-on-2 tournament teams are formed by randomly pairing boys with girls as teammates. On average, how much taller do you expect the boy to be?
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