SOLUTION: A manager gives a store evaluation form to each customer. Customers who mail in their complete forms receive a coupon. Identify the type of sample and determine whether it is bia

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Question 185685This question is from textbook saxon algebra 2
: A manager gives a store evaluation form to each customer. Customers who mail in their complete forms receive a coupon. Identify the type of sample and determine whether it is biased. Explain your answer.
I'm thinking this is a Self-selected sample. Am I correct? I'm not sure if it is biased or not. Maybe it's biased because only those customers mailing in the completed forms get a coupon. Any thoughts on this? This question is from textbook saxon algebra 2

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!

Yes, it has self-selective bias.
The bias is that participants choose themselves
as participants. The coupons are simply a
motivator but are not the reason for the bias
since everyone who receives a survey has the
same motivation.
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Cheers,
Stan H.