Let U be the event that the door has been unlocked and L be the event that the door has not been unlocked. If a white marble is drawn, the outcome is recorded and the marble is put back in the jar bef...Let U be the event that the door has been unlocked and L be the event that the door has not been unlocked. If a white marble is drawn, the outcome is recorded and the marble is put back in the jar before drawing the next marble. The probability that we will get two black marbles in the first two tries is listed adjacent to the lowest branch, and it = 3/10.
Let U be the event that the door has been unlocked and L be the event that the door has not been unlocked. If a white marble is drawn, the outcome is recorded and the marble is put back in the jar bef...Let U be the event that the door has been unlocked and L be the event that the door has not been unlocked. If a white marble is drawn, the outcome is recorded and the marble is put back in the jar before drawing the next marble. The probability that we will get two black marbles in the first two tries is listed adjacent to the lowest branch, and it = 3/10.