# Normal curve

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A 56-question multiple choice test has 4 possible answers for each question and a student chooses the answers to each problem at random. A student selects 16 correct answers. Find the probability of the result using the normal curve approximation to the binomial distribution.

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##### Solution Summary

This shows how to find the probability in a given situation using the normal curve approximation to the binomial distribution.

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First let us give the answer in terms of the original binomial distribution:

n is the total number of questions=56

p=probability of guessing right=1/4

q=probability ...

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