Share
Explore BrainMass

a confidence interval

Given the following information, calculate a confidence interval using a 95 percent confidence level: sample proportion =.4, standard error of the proportion =.05, and sample size =100.

Solution Preview

The mean is 0.4 and the standard error is 0.05
<br>because we only know the sample mean, we use t-stat to ...

Solution Summary

This job calculates a confidence interval.

$2.19