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You can draw either 10 times or 100 times at random with replacement from the box...

You can draw either 10 times or 100 times at random with replacement from the box [−1 1]. How many times should you draw?
(a) To win $1 when the sum is 5 or more, and nothing otherwise?

(b) To win $1 when the sum is −5 or less, and nothing otherwise?   

(c) To win $1 when the sum is between −5 and 5, and nothing otherwise?

Math   Statistics-And-Probability   
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