Blocking in the Randomizing Subjects applet In Exploration 4.2 you used the Randomizing Subjects applet to randomly assign subjects to two groups. At the end of the exploration, you blocked on a person's sex and saw this eliminated all the variability in the difference in proportion of males. You should have also seen that blocking on a person's sex reduced the variability in the difference in height. This reduction in variation happened because sex is associated with height. What about other variables? Open up the Randomizing Subjects applet to answer the following.