In a poll to estimate presidential popularity, 560 respondents out of 1,000 indi

Question

In a poll to estimate presidential popularity, 560 respondents out of 1,000 indicated they thought the president was doing a good job. (a success)

What is the proportion of success?

1)

2)

3)

4)

Develop of 95% confidence interval for the population proportion.

1)

2)

3)

4)

Is it reasonable to conclude that a majority (more than half) of the population believes the president is doing a good job?

1)

2)

1)

0.50

2)

0.560

3)

1

4)

None of the above                                                                                    

Explanation / Answer

proportion of success is 560/1000=0.56 thus option 2)

for 95% confidence the z value is 1.96

thus correct answer is 3)

a) Yes

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.