Q#40

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

Determine the y-intercept of the regression line for predicting Life Expectancy from Number of Cigarettes per day.

• A.

a = 64.404

• B.

a = 62.035

• C.

a = 55.815

• D.

a = 67.810