1.Decide whether the distribution is a probability distribution. If it is not a probability distribution, identify the property

(or properties) that are not satisfied.

A)B)

x 1 2 3 4 x 5 6 7 8

P(x) 1/2 3/5 6/5 3/4 P(x) .29 .22 .31 .13

2 .Decide whether the random variable x is discrete or continuous.

a.Let x represent the number of pumps in use at a gas station.

b.Let x represent the weight of a truck at a weigh station.