Question

you want to determine the average (mean) number of robocalls received each day by adults in canada. sample 1: a set of 460 canadians randomly selected from a list of all licensed car owners in canada. sample 2: the 460 adults in canada who respond to a survey published in a newspaper. sample 3: the first 460 people to visit a particular toronto grocery store one day. sample 4: a set of 460 canadians with phone numbers randomly selected from a list of all phone numbers in canada. which sample is most likely to be a representative sample? for each other sample explain why that sample is not likely to be a representative sample. why is sample 3 not likely to be a representative sample? a. sample 3 is likely to be biased because it is limited to the geographic region of toronto. b. sample 3 is likely to be biased because people asked while shopping at a grocery store are more likely to exaggerate. c. sample 3 is likely to be biased because it only looks at people who shop at grocery stores. d. sample 3 has no issues and is just as likely as sample 4 to be a representative sample.

Explanation:

A representative sample should accurately reflect the entire population. Sample 1 is limited to car - owners, Sample 2 is self - selected (only those who see and respond to the newspaper survey), and Sample 3 is limited to grocery store shoppers in Toronto. Sample 4, randomly selecting from all phone numbers in Canada, has a better chance of representing all adults in Canada. For the second part, Sample 3 is likely biased as it only includes people who shop at grocery stores, not representing all adults in Canada.

Answer:

The most likely representative sample is Sample 4.
For the multiple - choice question about Sample 3: C. Sample 3 is likely to be biased because it only looks at people who shop at grocery stores.