A well-constructed national sample of just __________persons produces poll results that have a sampling error of +/- 3 percent with a confidence interval of 95 percent.

Question

Quizplus · Accepted Answer

According to statistical standards, a sample size of at least 1,000 is necessary to achieve a sampling error of +/- 3 percent with a confidence interval of 95 percent. Therefore, choice C is the best option.

A Well-Constructed National Sample of Just __________Persons Produces Poll Results