X 3 4 5 6 7 8 9 10 P(X) 0.1 0.22 0.39 0.16 0.03 0.05 0.04 ? (a) Is X a discrete or continuous random variable? (Type: DISCRETE or CONTINUOUS) ANSWER: (b) What must be the probability of choosing a unit with 10 rooms? P(X = 10) = (c) What is the probability that a unit chosen at random has less than five rooms? P(X < 5) = (d) What is the probability that a unit chosen at random has three rooms? P(X = 3) = (e) What is the probability that a unit chosen at random has between four and six rooms? P(4 X 6) =