Probability Distribution Function

Question

The probability distribution for a random variable x is given in the table. find the probability that -2 ≤  x ≤  2.

 

x -5, -3, -2, 0, 2, 3

Probability .17, .13, .33, .16, .11, .10

Answer 1

 x  | P(X = x)

--------------

-5 |   0.17

-3 |   0.13

-2 |   0.33

 0 |   0.16

 2 |   0.11

 3 |   0.10

 

 

P(-2 ≤ X ≤ 2) = P(X = -2) + P(X = 0) + P(X = 2) = 0.33 + 0.16 + 0.11 = 0.60