A store manager wants to know the percentage of shoppers who use coupons he serves everyone who matches meat. I’ll he find at 6% of shoppers use coupons does the sampling method the store manager use support a valid inference
To determine if the sampling method used by the store manager supports a valid inference, we need more information about how the sampling was conducted.
If the store manager simply observed the shoppers who were served meat and then recorded how many of them used coupons, and this sample is representative of all shoppers in the store, then the inference that 6% of shoppers use coupons is likely valid. However, if the sample was biased in some way (for example, if the manager only recorded data from certain types of shoppers or only during certain time periods), then the inference may not be valid.
In order to make a valid inference, the sample should be randomly selected and representative of the larger population of shoppers in the store. Additionally, the sample size should be large enough to accurately reflect the actual proportion of shoppers who use coupons. Without knowing more about the sampling method used, it is difficult to definitively say whether the inference is valid or not.