BOX 2: Take the following information as true The residents of a residence hall can be classied as involved in a relationship, or not. Among involved people, 10% experience a break-up every month. Among those not involved, 5% enter into a relationship every month. You can think of these events as happening once a month, in the middle of the month. Social mixers are organized, once a month, just before the end of the month, to help those who are not involved nd partners. People who are involved, however, also attend these mixers and sometimes decide that the ?grass is greener? on the other side, becoming not-involved. In sum, at these mixers 20% of the involved break-up and 10% of the not \\ involved enter a relationship. 3. Refer to Box 2. In steady state, at the end of every month, after the social mixer, what fraction of the residents are not involved? (a) 1/20 (b) me (C) 2/9 (d) 1/3 (8) 4/9 (f) 1/2 (g) 2/3