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An 80% confidence interval is found to be (200, 240). What is the margin of error?A. 32B. 20C. 40D. 16

User Felsangom
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Answer: B

The margin of error is equal to 20


M\mathrm{}E=20

Step-by-step explanation:

Given that the 80% confidence interval is found to be;


(200,240)

The width of the interval is;


240-200=40

The margin of error is always half the width, so the margin of error is;


\begin{gathered} M\mathrm{}E=(40)/(2) \\ M\mathrm{}E=20 \end{gathered}

Therefore, the margin of error is equal to 20

User Chawki
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