The margin of error in the confidence interval for the difference μ1 – μ2 equals the standard error se( – 2) multiplied by either zα/2 or tα/2,df depending on whether or not the population variances are known.

Question

The margin of error in the confidence interval for the difference μ1 – μ2 equals the standard error se(   –   2) multiplied by either zα/2 or tα/2,df  depending on whether or not the population variances are known.

Quizplus · Accepted Answer

This statement is true. The margin of error for the difference between two means is calculated by multiplying the standard error by either zα/2 (if population variances are known) or tα/2,df (if population variances are unknown and estimated from the sample).

The Margin of Error in the Confidence Interval for the Difference