Since the ticket revenue of four games is exactly 6.5438+0.8 million, and this game is the best of the seven games, the probability is equal to the probability of two teams winning four games in a row, which is 2 * (1/2) 4 = 1/8.
2) 30+40+50+60+70+80=330, and it takes six or seven games to ensure the ticket revenue.
The probability that the Heat will win by 4: 0 is116.
The heat's winning probability is 4: 1: the first four wins and one loss in the fifth game (four choices), 4 * (1/2) 5 = 1/8.
Similarly, the probability of Thunder winning by 4: 0 or 4: 1 is116 and 1/8 respectively.
So the probability of hitting the sixth or seventh game is1-2 * (116)-2 * (1/8) = 5/8.
That is, the probability of getting no less than 3.3 million ticket income is 5/8.