A notebook computer dealer mounts a new promotional campaign. Purchasers of new computers may, if dissatisfied for

Question:

A notebook computer mounts a new promotional campaign. Purchasers of new computers may, if dissatisfied for any reason, return them within 2 days of purchase and receive a full refund. The cost to the of such a refund is $100. The estimates that 15% of all purchasers will, indeed, return computers and obtain refunds. Suppose that 50 computers are purchased during the campaign period.
a. Find the mean and standard deviation of the number of these computers that will be returned for refunds.
b. Find the mean and standard deviation of the total refund costs that will accrue as a result of these 50 purchases. Dealer
A dealer in the securities market is an individual or firm who stands ready and willing to buy a security for its own account (at its bid price) or sell from its own account (at its ask price). A dealer seeks to profit from the spread between the...