Confidence Intervals Can Be Used to Determine Whether Different Sample

Multiple Choice

Confidence intervals can be used to determine whether different sample proportions reflect a "real" difference in the population. The basic approach is to

A) find the margin of error for each proportion and see if the difference is less than zero.
B) find the difference in the proportions and see if the difference is less than zero.
C) find a confidence interval at the significance level desired for the difference in proportions.
D) find the difference in the proportions and see if the difference is greater than zero.