For a given data set,specific value of X,and a confidence level,if all the other factors are constant,the confidence interval for the mean value of Y will _______ be wider than the corresponding prediction interval for the individual value of Y.
A)Always
B)Sometimes
C)Never

Question

Quizplus · Accepted Answer

The confidence interval for the mean value of Y is always narrower than the prediction interval for an individual value of Y because the prediction interval accounts for both the variability of the mean and the additional variability of individual observations.

For a Given Data Set,specific Value of X,and a Confidence