Answer to Question #291953 in Statistics and Probability for Shaaz

Question

1. Daily sales records for a car dealership show that it will sell 0, 1, 2, or 3 cars, with

probabilities as listed:

Number of Repairs(X) 0 1 2 3

p(x) 0.5 0.3 0.1 0.1

a. Find the probability distribution for X, the number of sales in a two-day period,

assuming the sales are independent from day to day.

b. Graph the probability distribution.

c. What is the F(x) for the number of sales in a two-day period?

d. Graph the cumulative probability distribution.

e. Find the probability that at least one sale is made in the next two days.