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# Show work! Suppose we have the following probability distribution for random variable x: x P(x) 5 0.1 10 0.

Show work!

A. Suppose we have the following probability distribution for random variable x:

__ x P(x)__

5 0.1

10 0.4

20 0.4

25 0.1

Question 1: Calculate the expected value of x.

Question 2: Calculate the variance of x.

Question 3: Calculate the standard deviation of x.