Random samples of size n1=55 and n2 = 65 were drawn from populations 1 and 2 , respectively. The samples yielded p ̂1=.7 and p ̂2=.6. Test Ho: (p1-p2) = 0 against Ha: (p1-p2) ≠0 using α = .05.

1) Perform a hypothesis test of p1 = p2 with a 5% significance level (95% confidence level).

2) Obtain a 95% confidence interval estimate of p1 - p2.

3) Do you come up with the same conclusion for Question 19 and Question 20? Why or why not?

Answer rating: 100% (QA)

1 Test statistic Critical value Z005 1645 As the test statistic does not fall in the critica... View the full answer