Andrew Lara sells new cars for Liberty Buick. Andrew usually sells the largest ...............

Andrew Lara sells new cars for Liberty Buick. Andrew usually sells the largest number of Buicks on Saturday. He has the following probability distribution for the number of cars he expects to sell on a particular Saturday :0 cars= probability of .1,1 cars = probability of .2,2 cars = probability of .3,3 cars = probability .3,4 cars = probability of .1 on a typical Saturday, how many cars does Andrew expect to sell. What type od distribution is this?