7 of 5 Q5(10). One Airbnb has three rooms. Let random variable X be the number of booked rooms for one randomly selected day, t distribution of X. lay, the following table shows the X 0 2 3 P(x) |0.2 0.4 0.3 0.1 1(5). Find mean and standard deviation of the number of booked rooms, 2(5). Define random variable Y as the daily income for the Airbnb own which can be expressed by Y = 130X - 150. Find the mean and stand deviation of the daily income, Y