Author Question: Given a specific value ofxand a confidence level, which of the following statements is correct? (Read 36 times)

hannahmadyronde · **on:** Feb 26, 2023

Question 1

From the residual versus fit plot, it appears that:

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the regression has no problems.

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there may be a problem with nonconstant variance.

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the mean error is not zero.

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The regression equation is not shown so it is not possible to make a determination.

Question 2

Given a specific value ofxand a confidence level, which of the following statements is correct?

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The confidence interval estimate of the expected value ofycan be calculated, but the prediction interval ofyfor the given value ofxcannot be calculated.

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The confidence interval estimate of the expected value ofywill be narrower than the prediction interval.

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The prediction interval ofyfor the given value ofx can be calculated, but the confidence interval estimate of the expected value ofycannot be calculated.

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The confidence interval estimate of the expected value ofywill be wider than the prediction interval.

ellie · **Reply #1 on:** Feb 26, 2023

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