Answer the following 11 questions

e. Below is a graph showing the actual data points and the Model A predicted equations for each treatment group. Model A Platelet Calcium (nM) 60 85 90 75 T0 90 95 100 105 Blood Pressure (mmHg) Based on the graph above, estimate the difference in platelet calcium level for a patient who took the drug compared to a patient who took the placebo for each of the following blood pressure measurements: Platelet Calcium Difference [Drug Placebo] For Blood Pressure = 90 mmHG: nM For Blood Pressure = 95 mmHG: 11M For Blood Pressure =100 mmHG: 11M Now look at your equations from part (b). Do these estimates correspond to what you would get if you plugged in these blood pressure measurements? f. Interpret the estimate of T reatment Group in context for Model A. 73 1. Statistical Modeling B To test a new drug's effectiveness at decreasing calcium in blood platelets, doctors gave the drug to a group of 30 patients and a placebo to another group of 30 patients. Since research has shown that blood pressure is related to platelet calcium levels, they measured each patient's blood pressure (mm Hg) in addition to the calcium concentration in their blood platelets (nM). They ran two different models predicting platelet calcium: Model A contains only the main effects of Treatment and Blood Pressure, while Model B also contains the interaction term. b. Below are the results from Model A (main effects only). Note that Treatment was dummy- coded (0=Placebo, 1=Drug). Estimate Std. Er'ror' t va'lue Pr(>|t|) (Intercept) -17.678 5.749 3.075 0.003 ** b'lood_pr'essure 1.026 0.061 16.901 |t|) (Intercept) -45.547 5.699 7.992