Which of the following is true of the equation [n z ) 2 ] for computing the sample size required to achieve a desired confidence interval half-width for a proportion?
A) The sample size calculated will only be an approximation.
B) The standard deviation need not be calculated first in order to compute the sample size.
C) The value for is always set at 1.
D) The most conservative estimate for is 0.5.
Correct Answer:
Verified
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