Two balls are drawn in succession without replacement from an urn containing four red ballsand three black balls. Let X be the possible outcomes drawing red balls. Find the probabilitymass function and mean for X.

Two balls are drawn in succession without replacement from an urn containing four red balls
and three black balls. Let X be the possible outcomes drawing red balls. Find the probability
mass function and mean for X.

Match the items on the right to the items on the left.