Question: A random variable X has the following probability distribution: X 22 0 2 Probability .25 .50 .25 a. Calculate the mean of X. b. Calculate

A random variable X has the following probability distribution:

X 22 0 2 Probability .25 .50 .25

a. Calculate the mean of X.

b. Calculate the variance of X.

c. Calculate the standard deviation of X.

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