A store is conducting a customer satisfaction survey. Which of the following most likely lead to a bias sample? A selecting random customers at the checkout, b selecting female customers who purchase an item see selecting every fourth customer who comes into the store or D selecting 100 customers from a customer list at random?
B selecting female customers who purchase an item.
This selection method may lead to a biased sample because it only focuses on one specific demographic group (female customers) who purchase a specific item. This could potentially skew the results of the customer satisfaction survey and not accurately represent the overall customer satisfaction of the store. It is important to have a random selection method to ensure a representative sample for the survey.