For a biology project, you measure the weight in grams (g) and the tail length in millimeters

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For a biology project, you measure the weight in grams (g) and the tail length in millimeters (mm) of a group of mice. The equation of the least-squares line for predicting tail length from weight is predicted tail length = 20 + 3 × weight Which of the following is not correct?

(a) The slope is 3, which indicates that a mouse’s weight should increase by about 3 grams for each additional millimeter of tail length.

(b) The predicted tail length of a mouse that weighs 38 grams is 134 millimeters.

(c) By looking at the equation of the least-squares line, you can see that the correlation between weight and tail length is positive

(d) If you had measured the tail length in centimeters instead of millimeters, the slope of the regression line would have been 3/10 = 0.3.

(e) One mouse weighed 29 grams and had a tail length of 100 millimeters. The residual for this mouse is −7.

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Related Book For  book-img-for-question

The Practice Of Statistics

ISBN: 9781464108730

5th Edition

Authors: Daren S. Starnes, Josh Tabor

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