Posted by **Raymond** on Monday, November 21, 2011 at 11:53am.

Independent samples of n1 = 400 and n2= 400 observations were selected from binomial populations 1 and 2, and x1 = 100 and x2 = 127 successes were observed. Calculate the approximate standard error for the statistic, the point estimator for the difference ( p1-p2) in the two binomial proportions?

A. 0.0441

B. 0.0287

C. 0.0536

D. 0.0318

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