Question 452767
Out of the 200 insomniacs, 98 reported regularly watching The Late Show with David Letterman before they began to count sheep.Calculate the margin of error for a 78% confidence interval of the true proportion of insomniacs who regularly watch David Letterman before counting sheep.
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p = 98/200 = 0.49
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ME = z*sqrt[pq/n]
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ME = 1.226528*sqrt[0.49*0.51/200] = 0.0434
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Cheers,
Stan H.
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A. 0.164 
B. 0.056 
C. 0.043 
D. 0.136