Problems 24 A pharmaceutical researcher wishes to know, as precisely as possible, the effect that a new drug will have o

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Problems 24 A pharmaceutical researcher wishes to know, as precisely as possible, the effect that a new drug will have on the human pulse rate. To investigate this effect, he administers different doses of the drug to each of seven randomly selected patients, and he notes the increase in their pulse rates one hour later. Patient A B C D E F G Dosage (cc's) 1.5 2 2.5 1.5 3 2 2.5 Pulse Rate (bpm) 8 10 13 10 14 11 12
(a) Draw and upload a scatterplot representing the data above. Make sure you follow the directions on the PDF regarding the scatterplot.
(b) What is the correlation between the two variables? ? There is a moderately strong negative correlation between the change in pulse rate and the dosage of the new drug. There is a weak negative correlation between the change in pulse rate and the dosage of the new drug. There is a weak positive correlation between the change in pulse rate and the dosage of the new drug. There is no correlation between the change in pulse rate and the dosage of the new drug. There is a moderately strong positive correlation between the change in pulse rate and the dosage of the new drug.
(c) What is the estimate for Pearson's r-value? The r value would be approximately -0.6 or -0.7. The r value would be approximately 0.3 or 0.4. The r value would be approximately 0.6 or 0.7. The r value would be approximately -0.3 or -0.4. The r value would be approximately 0.
(d) Answer both parts: A) Look at the line you drew for question(a) Choose two points that are ON THE LINE you drew for question(a) (The points do not have to be from the data, they just have to be on the line you drew.) State the two points you circled on the line you drew for question (a) B) Find the slope using those two points.
(e) Find the y-intercept by substituting the slope into the equation, y = mx +b and substituting either of the two points from question (d) for the x and y coordinates.
(f) Find the y-intercept by substituting the slope into the equation, y = mx +b and substituting either of the two points from question (e) for the x and y coordinates.
(g) Write an equation to represent the trend between the drug dosage and pulse rate using your answers from questions (e) and (f).