Customers visit a Web site, and the probability of an order if a customer views five or fewer pages is 0.01. However, if a customer views more than five pages, the probability of an order is 0.1. The probability a customer views five or more pages is 0.25. The customers behave independently.

(a) Is the number of customers who visit the site until an order is obtained a geometric random variable? Why or why not?

(b) What is the probability that the first order is obtained from the tenth customer to visit the site?