Question 15 1/ 1 point Bone mineral density and cola consumption has been recorded for a sample of patients. Let x represent the number of colas consumed per week and y the bone mineral density in grams per cubic centimeter. Assume the data is normally distributed. Bone Mineral Density (g) 0.8777 0.8925 0.8898 0.8769 0.8999 0.8634 0.8762 0.8888 0.8552 10 0.8546 11 0.8762 Cola Consumed O 00 NN ORI WN e Based on your results, If the Colas Consumed increases by 1, Bone Mineral Density, on average, decreases by approximately how much? Round to 3 decimal places. Make sure you put a 0 in front of the decimal. Answer: 0.002 w Hide question 15 feedback Copy and Paste the Data into Excel. Data -> Data Analysis -> Scroll to Regression Highlight Bone Mineral Density for the Y Input: Highlight Colas Consumed for the X Input: Make sure you click on Labels and Click OK If done correctly then you look under the Coefficients for the values to write out the Regression Equation Coefficients Intercept 0.891716364 Cola -0.002389091 Consumed Bone Mineral Density = 0.891716 - 0.002389%(Colas Consumed) The slope is -0.002 At the Colas Consumed increases by 1, then Bone Mineral Density will change by whatever the slope is. In our regression out the slope is -0.002. We account for the negative by saying it "decreases"” instead of increase by "-0.002". The "decrease" takes place of the negative sign. As Colas Consumed increases by 1, Bone Mineral Density will decrease by 0.002.
