<PRE><B>Question 1041724</B>
Since no confidence interval is stated, we can assume a 95% confidence interval
:
Margin of Error(ME) at 95% = 0.043 = 1.96 * square root( (0.45 * 0.55) / n )
:
0.022 = square root(0.2475 / n)
:
0.000484 = 0.2475 / n
:
n = 511
:
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Answer is B)
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:
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