Find the sample size.
-The unemployment rate of persons with a disability is typically higher than for those
With no disability. Recent statistics report that the national rate of unemployment among
This group is 14.5%. The local government of a small city wants to determine the rate in
Its region to within ±5%, with 95% confidence. How many individuals with disabilities
Should they sample?

Question

Quizplus · Accepted Answer

The sample size for a proportion is given by the formula:n = (Z^2 * p * q) / e^2where:n is the sample sizeZ is the z-score for the desired confidence levelp is the estimated proportionq is the complement of p (1 - p)e is the margin of errorIn this case, we have:Z = 1.96 (for a 95% confidence level)p = 0.145q = 1 - p = 0.855e = 0.05Plugging these values into the formula, we get:n = (1.96^2 * 0.145 * 0.855) / 0.05^2n = 191.04Therefore, the sample size should be 191.

Find the Sample Size