Question: If the distribution function F of a variable X has a jump at the point a, then (a) X is a discrete random variable (b)

If the distribution function F of a variable X has a jump at the point

a, then

(a) X is a discrete random variable

(b) X is a continuous random variable

(c) P(X =

a) = F

(a)

(d) P(X =

a) =0

(e) P(X =

a) > 0

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