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2) (5 points) Let X be the number of courses for which a randomly selected student at a certain university is registered. The probability distribution

2) (5 points) Let X be the number of courses for which a randomly selected student at a certain university is registered. The probability distribution of X is given below: X 2 3 4 5 6 7 P(X) 02 .03 09 25 0.4 16 05 a) Find the mean and standard deviation. b) Interpret the mean and standard deviation

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