At a petrol station, 90% of the customers use RON95 fuel, 5% use RON97
fuel and 5% use diesel fuel. Suppose that 75%, 80% and 90% of RON95
users, RON97 users and diesel users fill their tanks, respectively. At this
station, a customer just filled her tank. What is the probability that she used
RON95 fuel?
fuel and 5% use diesel fuel. Suppose that 75%, 80% and 90% of RON95
users, RON97 users and diesel users fill their tanks, respectively. At this
station, a customer just filled her tank. What is the probability that she used
RON95 fuel?