Steven lives in a group home with four other men.

Steven lives in a group home with four other men. Most of his housemates spend about equal amounts of time in the living room and the recreation room. Steven spends about 75% of his free time in the living room and 25% in the recreation room. Staff observations have shown that staff attention is very reinforcing for Steven. If the matching law is operating in this scenario, what is the predicted rate of staff attention to Steven in the living room?