Chapter 1.4, Problem 92E

In Exercises 1.92–1.97, we present descriptions of designed experiments. In each case, identify the

1. a. experimental units.
2. b. response variable.
3. c. factor(s).
4. d. levels of each factor.
5. e. treatments.

1.92 Increasing Unit Sales. Supermarkets are interested in strategies to increase temporarily the unit sales of a product. In one study, researchers compared the effect of display type and price on unit sales for a particular product. The following display types and pricing schemes were employed.

• Display types: normal display space interior to an aisle, normal display space at the end of an aisle, and enlarged display space.
• Pricing schemes: regular price, reduced price, and cost.