Recall the regression of percent of body fat on height and waist from Exercise 12-1. The simple

Question:

Recall the regression of percent of body fat on height

and waist from Exercise 12-1. The simple regression model of

percent of body fat on height alone shows the following:

image

(a) Test whether the coefficient of height is statistically significant.

(b) Looking at the model with both waist and height in the model,

test whether the coefficient of height is significant in this model.

(c) Explain the discrepancy in your two answers.

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Related Book For  book-img-for-question

Applied Statistics And Probability For Engineers

ISBN: 9781118539712

6th Edition

Authors: Douglas C. Montgomery, George C. Runger

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