Q#41

A study of cigarette smoking was conducted by researchers at UH. They examined the number of cigarettes smoked per day (X) and life expectancy (Y) of smokers. Some findings are summarized for n = 62 subjects below:

Number of cigarettes smoked per day Life Expectancy

X = 11.52, SX = 5.0 = 74.8, SY = 3.7 r = 0.82

Based on your slope and y-intercept, write the correct equation of the regression line.

• A.

Y' = 55.815X + 1.6480

• B.

Y' = 0.6068X + 67.810

• C.

Y' =67.810X +0.6068

• D.

Y' = 1.6480X + 55.815