Question: Answer parts a-c using the following probability distribution.

X P(X)

a. What value should P(0) have so that this distribution qualifies as a discrete probability distribution? That is, with what number should the ? in the distribution above be replaced with in order for this distribution to qualify as a discrete probability distribution?

b. Find the mean of the distribution. (If you were unable to answer part a, make up some number to use for P(0).)

c. Find the standard deviation for this distribution.