_____ 14. 3,500 randomly chosen voters are asked in a national poll if they appr
ID: 3369195 • Letter: #
Question
_____ 14. 3,500 randomly chosen voters are asked in a national poll if they approve of the job the president is doing. Which best describes a sampling distribution of the sample proportion in this situation?
a. A confidence interval containing the true proportion of voters who approve of the president.
b. The proportion of these 3,500 voters who approve the president.
c. The proportion of all voters who approve the president.
d. The proportions who approve the president within all possible samples of this size.
_____ 15. Which statement about a confidence interval is true?
a. There is a 95% probability that the true proportion is this interval.
b. The interval contains 95% of the true proportion.
c. 95% of the time, the sample proportion and the true proportion will be the same.
d. 95% of intervals constructed this way will contain the true proportion
Explanation / Answer
Solution14:
b. The proportion of these 3,500 voters who approve the president.
Which becomes sample proprtion
p^
p^=x/ n
ANSWER IS
b. The proportion of these 3,500 voters who approve the president.
Solution15:
Which statement about a confidence interval is true?
Confidence interval gves for interval estimates here for population proportion
A 95% confidecne interval has a 0.95 probability of conatining the population proportion.
b. The interval contains 95% of the true proportion.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.