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THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

Question 85

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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

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