3. In government data, a household consists of all occupants of a dwelling at random and count the number of people it contains. Here is the assignment of probabilities for the outcomic, The probability of finding 3 people in a household is equal to the probability of finding 4 people. Number of persons 2 3 4 5 6 7+ Probability 0.25 0.32 2 ? 0.07 0.03 0.01 a. What probability should replace "?" in the table? Why? b. Find the probability that the chosen household contains more than 1 person. c. Find the probability that the chosen household contains 1, 2 or 3 people. d. What's the probability that a randomly selected American household has 5 or fewer people? Test (GMAT)