4. The following statements are either misleading or contain one or more errors relating to correlation. Point out what is misleading or the nature of the error(s).

(a) "For the 27 students in my Math 118 class last semester, the correlation between the score on the third exam and the score on the final exam was 1.03." [3 pts]

(b) " Among a sample of those completing the Boston Marathon in 2010, the correlation between age and speed was -0.567; the intercept of the corresponding regression line (predicting speed from age) is 9.5 and the slope,0.068." [4 pts]

(c) "The correlation between the income and the race of 50 middle-aged lawyers is 0.67 dollars." [5 pts]

(d) "Since the correlation coefficient between these two variables equals 0, there is no relationship between them." [4 pts]