Using empirical data, a researcher developed a linear regression model of Ỹ = 65 + 0.9x1 – 0.5x2 %3D to predict Y, the life span in years, where x, is the average hours per week of exercise and x2 is the number of years spent smoking. Using this model, what is the predicted life span for a person who exercised an average of 5 hours per week and smoked for 20 years? 50.5 years 59.5 years O 65 years 80.5 years

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Using empirical data, a researcher developed a linear regression model of
Ỹ = 65 + 0.9x1- 0.5x2
%3D
to predict Y, the life span in years, where x, is the average hours per week of
exercise and x2 is the number of years spent smoking. Using this model, what is the
predicted life span for a person who exercised an average of 5 hours per week and
smoked for 20 years?
50.5 years
O 59.5 years
65 years
80.5 years
Transcribed Image Text:Using empirical data, a researcher developed a linear regression model of Ỹ = 65 + 0.9x1- 0.5x2 %3D to predict Y, the life span in years, where x, is the average hours per week of exercise and x2 is the number of years spent smoking. Using this model, what is the predicted life span for a person who exercised an average of 5 hours per week and smoked for 20 years? 50.5 years O 59.5 years 65 years 80.5 years
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