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Take Test Review ouu c x C e secure l http assessment/makeWake isploounse assessment id 389516 &course; id- 102619 1&content.; 585772. Save and Submit A Cack Submit to complete this assessment. Question 8 of 8 Question 8 5 points Saved A computed 99% confidence interval for the true dnoronco botwoon two population proportions is -o 025 to .0 109 Then at 99% confidence level a we can conclude that thore is a significant difference between the two population proportons b Based on this result, we can not make a meaningful statement about the difference between the two population proportions we can conclude that the first population proportion is more than the second population proportion O d we can not conclude that there is a significant diference between the two population proportions A Click Submit to complete this assessment 8 of 8

Explanation / Answer

Yes, BOTH ANSWERS ARE CORRECT.

8)

Answer : c.

we can conclude that the first population proportion is more than the second population proportion.

Since,

0.067+- 0.042 , both the limits are positive

7)

p =56/80 =0.7

Given a=1-0.86=0.14, Z(0.14/2)= 1.48 (from standard normal table)

So 86% confidence interval is

p +/- Z*sqrt(p*(1-p)/n)

--> 0.7 +/- 1.48*sqrt(0.7*0.3/80)

--> (0.6241726, 0.7758274)

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