A store manager wants to know the percentage of shoppers who use coupons he survays every one 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 answer
The sampling method used by the store manager does not support a valid inference about the percentage of shoppers who use coupons overall in the store. The sample was taken only from shoppers in the meat aisle, which may not be representative of the store as a whole. To make a valid inference about the overall percentage of shoppers who use coupons, a random sample of shoppers from all areas of the store would be more appropriate.