A store manager wants to know the percentage of shoppers who use coupons. He surveys everyone who enters the meat aisle. He finds that 60 percent of shoppers use coupons. Does the sampling method the store manager used support a valid inference? (1 point)

Question

A store manager wants to know the percentage of shoppers who use coupons. He surveys everyone who enters the meat aisle. He finds that 60 percent of shoppers use coupons. Does the sampling method the store manager used support a valid inference? (1 point)

• Yes, because the sample contains coupon users and non-users.
• No, because not all people who enter the meat aisle use coupons
• Yes, because the manager asked everyone who entered the meat aisle.
• No, because the sample is not chosen randomly

Answer 1

• No, because the sample is not chosen randomly

The store manager's sampling method does not support a valid inference because he only surveyed people who entered the meat aisle, which may not be representative of all shoppers in the store. To have a valid inference, the sample would need to be randomly selected from all shoppers in the store.