Question: We play a game. If I win, i get 1 point. If I lose, I lose 1 point. The probability that I win is 50.1%

We play a game. If I win, i get 1 point. If I lose, I lose 1 point.

The probability that I win is 50.1% That I lose is 49.9%

1. Find mean and variance of payoff of one game.

2.If I play 200 time, what is probability that I get point bigger than 0

3.How many time I need to play if I want to make sure that the probability that I get more than 0 is over 85%

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