Question

the student government at the local middle school surveyed students to help plan the end of year party. for the first sample, they surveyed every other person at sports practice after school. for the second sample, they surveyed every fifth person entering the cafeteria where all students eat. which statement about the samples is true? end - of - year party survey sample 1 sample 2 water park 21 water park 36 bowling/arcade 36 bowling/arcade 28 zoo 16 zoo 24 dance & dinner 27 dance & dinner 12 sample 1 is biased. sample 2 is biased. both samples are biased. neither sample is biased.

Explanation:

Sample 1 surveys every other person at sports practice. These students may have different preferences than non - sports students. Sample 2 surveys every 10th person entering the cafeteria. But cafeteria - goers may not represent all students (e.g., students who don't eat in the cafeteria are excluded). So both samples are likely to be unrepresentative of the entire student body, which means they are biased.

Answer:

C. Both samples are biased.