THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

Multiple Choice

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
In a random sample of 150 large retailers,110 used regression as a method of forecasting.In an independent random sample of 180 small retailers,90 used regression as a method of forecasting.
-Find the 90% confidence interval for the difference between the two population proportions.

A) 0.23 ± 0.0482
B) 0.23 ± 0.0854
C) 1.23 ± 0.0482
D) 1.23 ± 0.0854