Question

consider a 90 percent confidence interval to estimate a population proportion that is constructed from a sample proportion of 66 percent. if the width of the interval is 10 percent, what is the margin of error?

Answer 1

Using confidence interval concepts, it is found that the margin of error is of 5%.

How is a confidence interval defined?

• A confidence interval is given by an estimate(sample mean of proportion) plus/minus the margin of error.

• The width of a confidence interval is twice it's margin of error.

In this problem, the width of the interval is 10 percent.

• Considering that the with is twice the margin of error, the margin of error is of 5%.

You can learn more about confidence interval concepts at brainly.com/question/16236451