Suppose that UNIQUE, a division of National Clothing, is a chain of women’s apparel stores operating
throughout the country. The chain recently ran a promotion in which discount coupons were sent to customers
of other National Clothing stores. Data were collected for a sample of 100 in-store credit card transactions at
the stores during one day while the promotion was running. The Proprietary Card method of payment refers to
charges made using a National Clothing charge card. Customers who made a purchase using a discount
coupon are referred to as promotional customers and customers who made a purchase but did not use a
discount coupon are referred to as regular customers. Because the promotional coupons were not sent to
regular customers, management considers the sales made to people presenting the promotional coupons as
sales it would not otherwise make. Of course, UNIQUE also hopes that the promotional customers will continue
to shop at its stores.
Sample Solution
