Describe in your own words the extent to which you do or don't find the first-order linear model a reasonable representation of a sprinter's speed.
What is the significance of the apparent change of parameters in the model over the time span from 1973 to 1993?
What is the significance of the difference between parameter values for men and women?
Some track experts speculate that men's and women's abilities in the sprints are becoming identical. Do your conclusions support this? Why or why not? Do you have enough evidence to determine whether there has been a change in relative abilities since 1973? Explain.