Question

9. An online site presented this​ question, "Would the recent norovirus outbreak deter you from taking a​ cruise?" Among the 34,592 people who​ responded, 65​% answered​ "yes." Use the sample data to construct a 95​% confidence interval estimate for the proportion of the population of all people who would respond​ "yes" to that question. Does the confidence interval provide a good estimate of the population​ proportion?

____<p<____

​(Round to three decimal places as​ needed.)

11. During a period of 11 years 697 of the people selected for grand jury duty were​ sampled, and 65​% of them were immigrants. Use the sample data to construct a​ 99% confidence interval estimate of the proportion of grand jury members who were immigrants. Given that among the people eligible for jury​ duty, 66.2​% of them were​ immigrants, does it appear that the jury selection process was somehow biased against​ immigrants?

___<p<____

​(Round to three decimal places as​ needed.)

Answer 1

9:

The sample is not simple random sample so it may not represent the population correctly.

11:

Since confidence interval contains 66.2% So it does not appear that the jury selection process was somehow biased against​ immigrants.