Question

X is a binomial variable with n=20.What is the mean of X if it is known that x is symmetric?​

Answer 1

Answer:

Mean = n x p = 20 x 0.5 = 10 (In the shape of x is symmetry and for symmetric binomial distribution value of p is always 0.5) Binomial distribution occurs where there are two possible outcomes where one is success and other one is failure.

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