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% of shoppers use coupons. Does the sampling method the store manager use support a valid inference? A, no because not all people who enter the meal use coupons, B no because the sample is not chosen randomly, C yes because the simple contains coupon users and non-users, D yes because the manager asked everyone who entered the meat aisle? Which one is correct
