Let n1, = 100, X1, = 50, n2 = 100, and X2 = 30. a. At the

Question:

Let n1, = 100, X1, = 50, n2 = 100, and X2 = 30.
a. At the 0.05 level of significance, is there evidence of a significant difference between the two population proportions?
b. Construct a 95% confidence interval estimate for the dif¬ference between the two population proportions.

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