Independent samples of = 400 and = 400 observations were selected from binomial populations 1 and 2, and = 100 and = 127 successes were observed, respectively.
a. What is the best point estimator for the difference ( ) in the two binomial proportions?
b. Calculate the approximate standard error for the statistic used in (a).
c. What is the margin of error for this point estimate?

Question

Independent samples of  = 400 and  = 400 observations were selected from binomial populations 1 and 2, and  = 100 and  = 127 successes were observed, respectively. 
a. What is the best point estimator for the difference (  ) in the two binomial proportions? 
b. Calculate the approximate standard error for the statistic used in (a).
c. What is the margin of error for this point estimate?

Quizplus · Accepted Answer

The Answer of Independent samples of  = 400 and  = 400 observations were selected from binomial populations 1 and 2, and  = 100 and  = 127 successes were observed, respectively. 
a. What is the best point estimator for the difference (  ) in the two binomial proportions? 
b. Calculate the approximate standard error for the statistic used in (a).
c. What is the margin of error for this point estimate?

Independent Samples of = 400 and = 400