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16-12-2019
Mathematics

contestada

What is the expected value of X?
6.2

6.05

5.95

5.6

X 3 4 5 7 9
P 0.2 0.1 0.25 0.05 0.4

Respuesta :

bboneless2419 bboneless2419

31-05-2022

Answer:

6.2

Step-by-step explanation:

Multiply each X by its corresponding probability P, then add up them up.

E[X] = 3•0.2 + 4•0.1 + 5•0.25 + 7•0.05 + 9•0.4

⇒ E[X] = 6.2

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