ANSWER ALL THREE. Chegg allows the user to post 4 questions in one post! You don

Question

ANSWER ALL THREE. Chegg allows the user to post 4 questions in one post! You don't need to explain anything just answer the question. Don't worry about an explanation! Thanks!!
Suppose we want to construct a confidence unterval for p1-p2 at the 90% level of confidence. From independent random samples we find that x1-376 n1-525, x2. From the collected informaton, we can be 90% confident that the difference between two population proportions s between what two values? (0.716, 0.740) O (525, S72) (-0.74, -0.716) () (-0.068, 0.021) Page 50 of 53 Previous Page Next Page Save Al Responses Go to Submit Qui2

Explanation / Answer

Image - 1:

The statistical software output for this problem is:

Two sample proportion summary confidence interval:
p1 : proportion of successes for population 1
p2 : proportion of successes for population 2
p1 - p2 : Difference in proportions

90% confidence interval results:

Hence,

90% confidence interval will be:

(-0.068, 0.021)

Option D is correct.

Image - 2:

n1 = n2 = 1201

Option D is correct,

Image - 3:

Test statistic = 0.8171

Option C is correct.

Difference Count1 Total1 Count2 Total2 Sample Diff. Std. Err. L. Limit U. Limit p1 - p2 376 525 423 572 -0.023320013 0.026906116 -0.067576636 0.02093661

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

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