6. The National Institute of Health is studying the relationship between number of
smoked per day and the birth weight of babies born to mothers who
smoke cigarettes. A sample of the 6 points is selected are listed below.
cigarettes
No. of Cigarettes per day (X) 22 13 29 11 28 6
Birth weight (Y)
6.1 7.9 5.8 7.4 6.3 8.2
Compute Pearson's sample correlation coefficient.
Compute the equation of the least squares regression line.
ŷ
=
What is the predicted baby weight born for a mother smoke 40 cigarettes per day.