Chapter 4.1, Problem 7E

To determine

To explain why the result can’t be trusted in spite of large sample size for the survey.

Explanation of Solution

This online poll is a voluntary response sampling. Voluntary response samples attract people who feel strongly about the issue in question, that leads bias. The reason of biased is that this sample does not represent the population entirely, it only represent the certain proportion of population who have strong opinionIt is biased in favor of those who feel most strongly about the issue being surveyed that’s why in spite of large sample size for this survey, we can’t trust the result.