When constructing a confidence interval for a difference between two population proportions, why is it important to check that the number of successes and the number of failures in each sample is at least 10? Select the correct answer A. So we can assume that the two samples are independent.
B. So we can assume the sampling distribution of Di-D is approximately Normal,
C. So we can assume that the observations within each sample are independent
D. So we can assume that population 1 and population 2 are approximately Normal.
E. So we can generalize the results to the populations from which the samples were selected.