# What is the probability that the first call she takes will offer to sell her a Jeep Liberty?

###### Find a 90% confidence interval for the difference between the two population means.

April 16, 2018

A business student is searching for a used car to purchase, so she posts an ad to a website saying she wants to buy a used Jeep between \$18,000 and \$20,000. From Kelly’s BlueBook.com, she learns that there are 149 cars matching that description within a 30-mile radius of her home. If we assume that those are the people who will call her and that they are equally likely to call her:,a) What is the probability that the first caller will be a Jeep Liberty owner?,b) What is the probability that the first caller will own a Jeep Liberty that costs between \$18,000 and \$18,999?,c) If the first call offers her a Jeep Liberty, what is the probability that it costs less than \$19,000?,d) Suppose she decides to ignore calls with cars whose cost is >\$ 19,000. What is the probability that the first call she takes will offer to sell her a Jeep Liberty?