Suppose a gambler plays roulette 400 times, betting $1 on each play on red. Recall from the previous week's that the gambler has a 18 chances in 38 to win. Thus the box model contains 18 +$1 tickets and 20 -$1 tickets.  The gambler can expect to lose $, give or take $ or so. Hint: This problem is exactly the same as the previous problem, you can reuse some of your previous calculations instead of starting over from scratch.

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