A small brew pub sent out questionnaires to a simple random sample of 250 customers asking whether they would like the brewery to include an imperial stout in their regular offerings. Of the 250 questionnaires, 12 were returned and 10 of those were in favor of including the stout. Specify The type of bias involved.
A) Sampling
B) Nonresponse
C) Voluntary response
D) Self-interest

Question

Quizplus · Accepted Answer

This is an example of nonresponse bias because only 12 out of 250 customers returned the questionnaire, so the sample may not accurately represent the opinions of all customers.

A Small Brew Pub Sent Out Questionnaires to a Simple