1. Let n 1 = 80, X 1 = 70, n 2 = 80, and X 2 = 50. a. At the 0.10 level of significance, is there evidence of a significant difference between the two population proportions? b. Construct a 90%...


1. Let n1
= 80, X1
= 70, n2
= 80, and X2
= 50.


a. At the 0.10 level of significance, is there evidence of a significant difference between the two population proportions?


b. Construct a 90% confidence interval estimate of the difference between the two population proportions.


2. Let n1
= 100, X1
= 45, n2
= 50, and X2
= 25.


a. At the 0.01 level of significance, is there evidence of a significant difference between the two population proportions?


b. Construct a 99% confidence interval estimate for the difference between the two population proportions.



May 20, 2022
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