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Answer Questions47 through 52 using the following data regarding maternal smoking and infant birth weight.(X,X 2 , Y,Y 2 ,and XY have already been calculated

Answer Questions47 through 52 using the following data regarding maternal smoking and infant birth weight.(X,X2, Y,Y2,and XY have already been calculated for you

and are shown below.)

Cigarettes Per Day (X)X2Infant Birth Weight (Y)Y2XY

247.556.2515.0

6367.251.8443.2

101006.947.6169.0

121446.238.4474.4

X=30X2=284Y=27.8Y2=194.14XY=201.6

What is the slope (b)?

-0.12

-2.30

4.44

19.67

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