Question

Construct a confidence interval for p 1 minus p 2 at the given level of confidence....

Construct a confidence interval for p 1 minus p 2 at the given level of confidence. x 1 equals366​, n 1 equals509​, x 2 equals404​, n 2 equals554​, 90​% confidence The researchers are nothing​% confident the difference between the two population​ proportions, p 1 minus p 2​, is between nothing and nothing.

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Answer #1

Given that, x1 = 366, n1 = 509 and x2 = 404, n2 = 554

Using TI-84 calculator get, the 90% confidence interval for (p1 - p2) is, (-0.0553, 0.0350).

The researchers are 90% confident the difference between the two population​ proportions, (p1- p2) ​, is between -0.0553 and 0.0350

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