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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