Question: When you sum 30 or more independent random variables, the sum of the random variables will usually be approximately normally distributed, even if each individual

When you sum 30 or more independent random variables, the sum of the random variables will usually be approximately normally distributed, even if each individual random variable is not normally distributed. Use this fact to estimate the probability that a casino will be behind after 90,000 roulette bets, given that it wins $1 or loses $35 on each bet with probabilities 37/38 and 1/38.

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