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)

Responses

No, because not all people who enter the meat aisle use coupons. 
No, because not all people who enter the meat aisle use coupons. 

Yes, because the manager asked everyone who entered the meat aisle. 
Yes, because the manager asked everyone who entered the meat aisle. 

Yes, because the sample contains coupon users and non-users.
Yes, because the sample contains coupon users and non-users.

No, because the sample is not chosen randomly.

:)

1 answer

The correct response is:

No, because the sample is not chosen randomly.

The store manager's survey specifically targets people in the meat aisle, which may not represent the general population of shoppers. People who enter the meat aisle might have different shopping behaviors than those who shop in other aisles, leading to a biased sample. Therefore, the inference about the percentage of all shoppers who use coupons cannot be reliably made based on this survey.