The difference between formulas for constructing a confidence interval and a prediction interval is A) the prediction interval is the square root of the confidence interval. B) the addition of "1" to the quantity under the radical sign. C) the prediction interval uses r² and the confidence interval uses r. D) no difference. E) None of these statements are correct.

Question

Quizplus · Accepted Answer

The prediction interval formula includes an additional "1" under the square root to account for the extra variability when predicting a single new observation, compared to estimating the mean in a confidence interval.

The Difference Between Formulas for Constructing a Confidence Interval and a Prediction