THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
In a recent survey of 240 teachers in Richmond,Virginia,77.2% supported standardized national testing of elementary students.In a survey of 162 teachers in Raleigh,North Carolina,64.2% supported national testing.
-What is the lower confidence limit of the 99% confidence interval for the difference between the two population proportions?
A)-0.011
B)0.036
C)-0.036
D)0.011

Question

Quizplus · Accepted Answer

The Answer of THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
In a recent survey of 240 teachers in Richmond,Virginia,77.2% supported standardized national testing of elementary students.In a survey of 162 teachers in Raleigh,North Carolina,64.2% supported national testing.
-What is the lower confidence limit of the 99% confidence interval for the difference between the two population proportions?
A)-0.011
B)0.036
C)-0.036
D)0.011