leandrechris4530 leandrechris4530

04-01-2024
Mathematics

contestada

The values that a discrete random variable, x, can take are 1,2,3,4 with the probabilities 0.22, 0.19, 0.38, 0.21 respectively. What is the expected value of this discrete probability distribution?
a. 2.78
b. 3.42
c. 2.15
d. 4.01

Respuesta :

georgepahno georgepahno

04-01-2024

Answer:

E(x) = .22(1) + .19(2) + .38(3) + .21(4)

= .22 + .38 + 1.14 + .84

= 2.58

None of those choices are correct.

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