The proportion of a store's sales made to shoppers who live more than 15 miles from a store (outshoppers)can be most reliably studied using _____.
A)a telephone survey
B)observation
C)a personal survey
D)customer billing data

Question

Quizplus · Accepted Answer

Customer billing data would provide the most accurate and reliable information about where the store's sales are coming from, including identifying outshoppers who live more than 15 miles away. A telephone survey or personal survey may not reach a representative sample of outshoppers, and observation may not provide precise data on the distance shoppers live from the store.

The Proportion of a Store's Sales Made to Shoppers Who