1. The SAS dataset "112211" on blackboard gives the systolic blood pressure (SBP), body size (QUET), age (AGE), and smoking history (SMK = 0 if a nonsmoker, SMK = 1 if a current or previous smoker) for a hypothetical sample of 32 white males over 40 years old from the town of Angina. (QUET stands for "quetelet index," a measure of size defined by QUET = 100 (weight/height2).) a. On the accompanying scatter plot for QUET vs. AGE, sketch by eye a line that fits the data reasonably well. Comment on the relationship described