A store manager wants to know the percentage of Shoppers who use coupons he surveys everyone who enters the me aisle he finds 60% of Shoppers use coupons does the sampling method the store manager uses support a valid inference
No, the store manager's sampling method does not support a valid inference. Surveying only those entering the me aisle may not be representative of all shoppers in the store. In order to make a valid inference about the percentage of shoppers who use coupons, the store manager should survey a random sample of all shoppers in the store.
