A Multiple Regression Model Was Used to Predict the Percent $4.399$

A multiple regression model was used to predict the percent body fat (Pct.BF) from Predictors (all in inches) : Height, Waist, and Chest.Which of the following statements is
NOT true.

Residual standard error: $4.399$ on 246 degrees of freedom Multiple R-squared: $0.7221$ , Adjusted R-squared: $0.7187$

A) By the rule of thumb, the model could make errors as much as 8.8% of body fat.
B) The model explains 72.2% of the variation in the percent of body fat.
C) There are 250 observations in this data set.
D) The coefficient of Waist indicates that body fat increases about 2.2 % for every additional inch of Waist measured.
E) All the above are true.

Correct Answer:

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