Question: Mean variance and standard deviation: A random variable X has the following probability distributions a. Find the mean of X. b. Find the variance of

Mean variance and standard deviation: A random variable X has the following probability distributions
Mean variance and standard deviation: A random variable X

a. Find the mean of X.
b. Find the variance of X.
c. Find the standard deviation of X.

r 6 78 9 10 11 )|0.21 0.12 0.29 0.11 0.01 0.26

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