A Local Consumer Reporter Wants to Compare the Average Costs

Multiple Choice

A local consumer reporter wants to compare the average costs of grocery items purchased at three different supermarkets, A, B, and C. Prices (in dollars) were recorded for a sample of 60 randomly
Selected grocery items at each of the three supermarkets. In order to reduce item-to-item
Variation, the prices were recorded for each item on the same day at each supermarket. Identify the treatments for this experiment.

A) the 60 × 3 = 180 prices
B) the three supermarkets
C) the day on which the data were collected
D) the 60 grocery items