If the standard error is 18, an approximate prediction interval for Y is:
A)±36.
B)±24.
C)±18.
D)impossible to determine without an F table.

Question

Quizplus · Accepted Answer

The prediction interval for Y typically involves the standard error, and a common approach is to use a multiplier (often around 2 for 95% confidence) times the standard error to estimate the range. Since 2 * 18 = 36, ±36 is a reasonable approximation.

If the Standard Error Is 18, an Approximate Prediction Interval