1. A new drug claims to lower heart rates of adults. Ten randomly selected adult volunteers agreed to take the new drug under close supervision. The drug dosage each adult received (in milligrams) and each adult's resulting heart rate reduction (in beats per minute) were recorded. Drug dosage 0.8 2.4 2 1.5 0.5 1 1.2 2.8 1.7 2.2 Heart rate reduction 7 17 20 15 10 5 12 21 11 a. State the explanatory and response variables in this situation. Explanatory: Response: b. State the value of the correlation coefficient, rounded to four decimal places. c. Circle the correct form, direction, and strength of the relationship between the two variables. Form: Linear Nonlinear Direction: Positive Negative Strength: Weak Moderate Strong d. State an equation of the regression line for this situation. Keep at least 3 decimal places with all of your numbers