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Interval estimates for proportions — Question 147

Original QCE Vault practice · 1 mark

Q147 · Practice questionTechnology-freeSimple familiar1 mark

QUESTION 147

For the same confidence level and approximately the same sample proportion, increasing a sample size from nn to 4n4n changes the margin of error by approximately a factor of
(A)
44
(B)
22
(C)
12\dfrac12
(D)
14\dfrac14
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