eli5 Why would you ever need to approximate a binomial probability using the normal distribution?

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As part of my curriculum, we need to know how to approximate a binomial probability using the normal distribution but I can’t see why you would ever do this in real life. What scenarios would require this method?

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Anonymous 0 Comments

With large values of n (the population), the binomial is very cumbersome to calculate.

Say you have 1000 throws of a dice and sum the face value of each throw. What is the likelihood of getting less than 2200 as the total?

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