 A small theatre troupe travels around the country putting on performances. Occasionally, the leading man becomes seriously ill—call this event M—and an understudy must take his place. The same thing sometimes happens to the leading lady—L. Although both events are rare, they tend to occur together: \(p(L \cap M) &gt; p(L)p(M)\). The reason is that the actors usually eat together at the same restaurants, where they occasionally share tainted food—T. See  Figure 3.