Question

Construct a confidence interval for p1 - p2 at the given level of confidence.

x1 = 388, n1 = 534, x2 = 404, n2 = 582, 90% confidence.

The researchers are __% confident the difference between the two population​ proportions, p1−p2​, is between __ and __.

​(Use ascending order. Type an integer or decimal rounded to three decimal places as​ needed.)

Answer 1

The statistical software output for this problem is :

The researchers are 90% confident the difference between the two population

​ proportions, p1−p2​, is between -0.012 and 0.077