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We have 4 binomial distributions: B(200, .15), B(150, .8), B(25, .5), and a B(9, .07). Which...

We have 4 binomial distributions: B(200, .15), B(150, .8), B(25, .5), and a B(9, .07). Which of the these are symmetric or approximately symmetric

Math   Statistics-And-Probability   
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Answer #1

On the basis of value of coefficient of skewness:

The binomial distribution B(25, 0.5) is symmetric because value of cofficient of skewness is equal to zero.

The binomial distribution B(150, 0.8) is approximately symmetric because value of coefficient is very near to zero.

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