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Interval estimates for proportions — Question 10

Original QCE Vault practice · 1 mark

Q10 · Practice questionTechnology-activeSimple familiar1 mark

QUESTION 10

A sample has p^=0.40\hat p=0.40 and n=100n=100. Using z=1.96z=1.96, the approximate margin of error for a 95% confidence interval is
(A)
0.0490.049
(B)
0.0780.078
(C)
0.0960.096
(D)
0.1960.196
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