Confidence Interval for Difference of Two Means Summary

Confidence Intervals for the Difference between Two Means


often when comparing two populations there is a need to see if there is a significant difference between the means of the populations.

confidence intervals for the difference between two means can be calculated to a desired degree of confidence, provided the two samples taken are independent.

Key Skills

find a confidence interval, at various degrees of confidence, for a the difference between the means of two populations.


confidence intervaldegree of confidencepoint estimatepopulationmean, standard deviation.