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7 . Assume random variable x follows a probability distribution shown in the table below. Determine the mean and standard deviation of x . (

7. Assume random variablexfollows a probability distribution shown in the table below. Determine the mean and standard deviation ofx. (Show all work. Just the answer, without supporting work, will receive no credit.)

X -2 0 1 2 3 P(x) 0.1 0.1 0.4 0.2 0.2

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