In building a confidence interval for the ATE of an experiment, what object will determine the spread of the confidence interval?
A) Null hypothesis value
B) Average outcome for the treated group
C) Average outcome for the control group
D) Sample standard deviation for the treated group

Question

Quizplus · Accepted Answer

The spread of the confidence interval will be determined by the sample standard deviation for the treated group. This is because the standard deviation captures the variability within the group and thus affects the precision of the estimate of the ATE. The null hypothesis value, average outcome for the treated group, and average outcome for the control group may be used in calculating the confidence interval, but they do not determine the spread of the interval.

In Building a Confidence Interval for the ATE of an Experiment