An experiment is conducted to determine the relationship between the amount of a certain drug in the bloodstream and the length of time it takes to react to a stimulus. A random sample of 5 persons who took this drug is selected. The amount of drug in the bloodstream (x) and the reaction time (y) in selected persons showed that:

E x = 15, E x² = 55, E y = 10, E y² = 26, E xy = 37

a) Compute SSxx SSyy and SSxy

b) Compute the correlation coefficient r and explain it in the context of the problem.

c) Find the equation of the regression line between y and x.

d) Use the equation in part (c) to predict y when .

e) Does it make sense to predict when x = -1? Why or why not? How about when x = 102? Why or why not?