Suppose That the Regression Equation Y = 16

question 31

Multiple Choice

Suppose that the regression equation y = 16.99 + 0.32 x₁ + 0.41 x₂ + 5.31 x₃ predicts an adult's height (y) given the individual's mother's height (x₁) ,his or her father's height (x₂) ,and whether the individual is male (x₃ = 1) or female (x₃ = 0) .All heights are measured in inches.Assume also that this equation is stable through time,the average adult female height is currently 63.8 inches and the average adult male height is 69.7 inches.Approximately what would be the average female height in two generations? You can assume that each individual has parents of average height.

• A) There is not enough information to determine the average female height in two generations.
• B) 66 inches.
• C) 67.25 inches
• D) 67.33 inches
• E) 67.82 inches

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