(4 points) In a certain video game, a player can get to Level "i + 1" of the game if he could pass Level " (there are no restrictions on the number of attempts in Level "). The variance of the number of attempts required to pass Level "i" (i.e., getting to Level "i+1") is 90. If the player could not pass Level "i" in his first 7 attempts, what is the probability that the player will pass Level "i" in his 10th attempt.