12 May One manager suggests that the company may be
One manager suggests that the company may be able to check on the progress of the wellness campaign by observing changes in the body mass index instead of redoing the more costly cholesterol reading. The body-mass index is defined as the ratio of the weight to the square of the height, multiplied by 703 if the height is measured in inches and the weight is measure in pounds. BMI = 703*Weight/(Height^2). There is also some discussion that changes in the BMI may be more effective in reducing male chlesterol readings than female cholesterol readings. a) Create the BMI variable and a dummy variable for sex, called Male, which is zero for females and 1 for males. b) Estimate a multiple regression model that includes the sex dummy, BMI and an interaction variable between BMI and sex, as independent variables. c) Calculate predicted values for cholesterol readings for both men and women at BMI values of 25 and 30. d) Summarize and interpret the results of this model. Is BMI relevant for the program? What do you tell the management team about the relative importance of the BMI for men and women
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