Statistics and Probability

Suppose that a grocery store purchases 5 units of a certain product at the wholesale price of $606 per unit and retails the product at $833.25 per unit. After the expiration date, the unsold product is removed from the shelf and the grocer receives a credit from the distributor equal to three- fourths of the wholesale price. If the probability distribution of the random variable X, the number of units that are sold from this lot, is x o l 2 3 4 5 fx ( ) 15 15 15 15 15 15