A die is rolled 360 times. Find the standard deviation for the number of 3s that will be rolled. [Solved]

you have to square root that answer

This is modelled by the binomial distribution B(360, 1/6). The variance of B(n, p) is np(1p). So your answer is sqrt(360 1/6 5/6) = 7.071.
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This post is last updated on hrtanswers.com at Date : 1st of September – 2022