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Fireburntbudder
15.02.2020 •
Mathematics
An certain brand of upright freezer is available in three different rated capacities: 16 ft3, 18 ft3, and 20 ft3. Let X = the rated capacity of a freezer of this brand sold at a certain store. Suppose that X has the following pmf
x =16, p(x) = .2
x= 18, p(x) = .5
x=20, p(x) = .3
Compute E(X), E(X2), and V(X).
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Ответ:
E(x)=18.2
E(x²)=333.2
V(x)=1.96
Step-by-step explanation:
Given that
x=16, p(x) =0 .2
x= 18, p(x) =0 .5
x=20, p(x) = 0.3
E(x) :
E(x²) :
V(x) ::
Ответ:
2.18761558E14
Step-by-step explanation: