Question

An interactive poll on the front page of the CNN website in October 2011 asked if readers would consider voting for Herman Cain, a Republican presidential candidate. A statistics student used the information from the poll to calculate the 95% confidence interval. He got (0.53, 0.59). He also conducted a hypothesis test. He found very strong evidence that more than half of voters would consider voting for Herman Cain. To what population do these conclusions apply?

A. They apply to all likely voters.

B. They apply to the population of those who visit the CNN website.

C. The results do not apply to any population because this was a voluntary response sample.

D. They apply to the population of those who visited the CNN website while the poll was on the front page.

Answer 1

The correct option is C) The results do not apply to any population because this was a voluntary response sample.

Explanation:

Consider the provided information.

A statistics student used the information from the poll to calculate the 95% confidence interval.

A voluntary response sample is made up of volunteers. these types of samples are always biased.

Because the people who join the sample have strong opinions about a topic in either direction.

Therefore, the correct option is C) The results do not apply to any population because this was a voluntary response sample.