Question: random variable W takes the value 1.5, 3, 6 and 7 with probabilities 0.2, .25, .4, .15 respectively compute the expectation of W compute the

random variable W takes the value 1.5, 3, 6 and 7 with probabilities 0.2, .25, .4, .15 respectively

compute the expectation of W

compute the expectation of W^2

compute the variance of W

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