Asked by Mario
The sample size needed to estimate the difference between two population proportions to within a margin of error E with a confidence level of 1- alpha can be found by using the equation shown below. Replace n1 and n2 by n and solve for n.
E= z alpha/2 square root p1q1/n1 + p2q2/n2
Solve for n and state the result. Show your work.
E= z alpha/2 square root p1q1/n1 + p2q2/n2
Solve for n and state the result. Show your work.