A random sample of 40 women is obtained, and theirs heights ( in inches ) and pulse rates in beats per minute are measured. The correlation coefficient is 0.20 and the equation of the regression line is y = 18.2 + 0.90 x. a. Find the predicted pulse rate for a woman who is 70 inches tall. b. What does the correlation coefficient indicate? c. What does the slope indicate? d. What does the y-intercept indicate?