Question: Answer Questions44through49using the following data regarding maternal smoking and infant birth weight.(X,X 2 , Y,Y 2 ,and XY have already been calculated for youand are

Answer Questions44through49using the following data regarding maternal smoking and infant birth weight.(X,X², Y,Y²,and XY have already been calculated for youand are shown below.)

Cigarettes Per Day (X) X² Infant Birth Weight (Y) Y² XY

247.759.2915.4

6367.353.2943.8

9 816.9 47.6162.1

111216.5 40.9670.4

X=28 X²=242Y=28.3Y²=201.15XY=191.7

The Pearson Correlation Coefficient (r) is:

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