A major electronics manufacturer has determined that when one of its televisions is sold, there is 0.08 chance that it will need service before the warranty period expires. It has also assessed a 0.05 chance that a digital video recorder (DVR) will need service prior to the expiration of the warranty.

a. Suppose a customer purchases one of the company’s televisions and one of the DVRs.

What is the probability that at least one of the products will require service prior to the warranty expiring?

b. Suppose a retailer sells four televisions on a particular Saturday. What is the probability that none of the four will need service prior to the warranty expiring?

c. Suppose a retailer sells four televisions on a particular Saturday. What is the probability that at least one will need repair?