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28 May, 12:50

Which of the following is the purpose of a confidence interval for the fitted (predicted value) from a

regression model?

A) To estimate the value of a future observation for a given value of x.

B) To estimate the population mean of Y for a given value of x

C) To estimate the population slope of the regression model

D) To estimate the sample mean of Y for a given value of x.

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  1. 28 May, 13:02
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    Answer: option A is correct

    Step-by-step explanation:

    the prediction interval is to cover a "moving target", the random future value of y,

    while the confidence interval is to cover the "fixed target",

    the average (expected) value of y, E (y).
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