In a Recent Poll of 200 Households, It Was Found

Multiple Choice

In a recent poll of 200 households, it was found that 152 had at least one computer and one television. A 95% confidence interval to estimate the population proportion was
Calculated to be 0.701 to 0.819. What sample size would be needed to change the margin
Of error to 0.030?

A) 1068
B) 779
C) 534
D) 390
E) Cannot be determined