The following confidence interval is obtained for a population proportion, p: (0.348, 0.382) Use these confidence interval limits to find the margin of error, E.
A)0.017
B)0.034
C)0.015
D)0.018

Question

Quizplus · Accepted Answer

The margin of error (E) is calculated as half the width of the confidence interval. The width of the interval is 0.382 - 0.348 = 0.034. Therefore, E = 0.034 / 2 = 0.017.

The Following Confidence Interval Is Obtained for a Population Proportion