X is a uniform random variable on the integers from 3 to 6. Find V(X).

Question

Question

X is a uniform random variable on the integers from 3 to 6.

Find V(X).

math Statistics-And-Probability

Answer 1

Answer #1

solution:

Answer: V(X) = 0.75

[ Note: short cut formulas - Mean = E[X] = a+b/2 , variance = (a-b)^2 / 12 ]

Answer 2

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