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You decide to use the normal distribution to approximate the binomial distribution. You want to know the probability of getting from 7 to 13 heads...

You decide to use the normal distribution to approximate the binomial distribution. You want to know the probability of getting from 7 to 13 heads out of 20 flips of a fair, two - sided coin.  Use ∏ = 0.5 (a coin flip is a 50-50 shot, right?).

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