Question

The probability function of a random variable X is given by
p(x) = `{{:(1/4",",  "for"  x = - 2),(1/4",",  "for"  x = 0),(1/2",",  "for"  x = 10),(0",",  "elsewhere"):}`
Evaluate the following probabilities
P(X < 0)

Answer 1

X	– 2	0	10
P(X = x)	`1/4	`1/4`	`1/2`

P(x < 0) = P(x = – 2) = `1/4`