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Marti decides to keep placing a $1 bet on number 15 in consecutive spins of a...

Marti decides to keep placing a $1 bet on number 15 in consecutive spins of a roulette wheel until she wins. On any spin, there’s a 1-in-38 chance that the ball will land in the 15 slot. Let Y = the number of spins it takes for Marti to win. (a) Calculate and interpret the mean of Y. (b) Calculate and interpret the standard deviation of Y

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