From a phone survey, a researcher determined that the true estimate for the proportion of voters who will reelect the mayor is likely to be in the interval (0.39, 0.47).

What is the survey's margin of error?

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Question

Cooley

11 June, 09:12

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Answers (1)

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Valentino Leonard · Answer 1

Here, p^ = (0.39 + 0.47) / 2 = 0.43

The given interval is (0.43 - 0.04, 0.43 + 0.04).

Therefore, the margin of error is 0.04.

From a phone survey, a researcher determined that the true estimate for the proportion of voters who will reelect the mayor is likely to be in the interval (0.39, 0.47).What is the survey's margin of error?Enter your answer in the box.