Look once more at the data from the Tour de France. In Exercise 32 we looked at the whole history of the race, but now let s consider just the post World War II era.
a) Find the regression of Avg Speed by Year only for years from 1947 to the present. Are the conditions for regression met?
b) Interpret the slope.
c) In 1979 Bernard Hinault averaged 39.8 kph, while in 2005 Lance Armstrong averaged 41.65 kph. Which was the more remarkable performance and why?