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The salary of workers in a factory follows a binomial (180, 1/3) distribution. What will be the mean and variance of the distribution curve?

The salary of workers in a factory follows a binomial (180, 1/3) distribution. What will be the mean and variance of the distribution curve? Correct Answer 60, 40

For a binomial (n, p) distribution, the mean is (n*p) and variance is (n*p*(1-p)). Now, n = 180, p = 1/3, 1-p = 2/3 Mean = (n*p) = 180 * 1/3 = 60 Variance = (60 * 2/3) = 40.

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