in a las vegas casino, gamblers lose a mean of per roulette game, with a standard deviation of . (since the standard deviation is quite high with respect to the mean, roulette players often win money on a bet.) suppose a gambler plays roulette for bets straight. what is the probability that he will be winning after bets? (hint: he is winning when the amount of his total earnings is positive.) carry your intermediate computations to at least four decimal places. report your result to at least three decimal places.