Question: The random variable A has the following probability distribution: a. Find the mean and standard deviation of A. b. How much of the probability distribution

The random variable A has the following probability distribution:

A 2 3 4 P(A) 0.6 0.1 0.1 0.1 0.1

a. Find the mean and standard deviation of A.

b. How much of the probability distribution is within 2 standard deviations of the mean?

c. What is the probability that A is between 2 and 2?

A 2 3 4 P(A) 0.6 0.1 0.1 0.1 0.1

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