while designing a new dessert menu, the manager of a restaurant offered customers a coupon in exchange for…

while designing a new dessert menu, the manager of a restaurant offered customers a coupon in exchange for completing a brief survey about their favorite desserts. 30 of the customers accepted the offer. is this sample of the restaurants customers likely to be biased? yes no
Answer
Brief Explanations:
Customers who are interested in the coupon may have different dessert - preferences from those who are not. This non - random selection based on the coupon incentive can lead to bias.
Answer:
yes