To construct a confidence interval for a comparison between two independent group means we substitute the ____________ for a single sample mean.
A) difference between two sample means
B) difference between the sample mean and the population mean
C) difference between two population means
D) population mean

Question

Quizplus · Accepted Answer

To construct a confidence interval for a comparison between two independent group means, we need to calculate the difference between the two sample means. This is because we are comparing the two groups and not comparing a single group with a population mean. Therefore, we need to substitute the difference between two sample means for a single sample mean to construct the confidence interval.

To Construct a Confidence Interval for a Comparison Between Two