Question

If X is a discrete random variable then Elax) is equal to​

Answer 1

Answer:

mean and is equal to the distance from the mean ... to discrete random variables: whenever a quan- ... sisting of n values xi of the random variable X. ... ElAX)l=~ g(x) = ~ mgWjWdx . (2.3-6).

Step-by-step explanation:

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Answer 2

Let the at A be x k

and the B be y k

when the is x−y

Dist=100km

⟾ =5 hours

∴  Dist =S×T

⟾ 100=(x−y)5

⟾ x−y=20⟶(I)

when THE is x+y

⟾ Dist=100km

⟾ t=1 hours

⟾ Dist=ST

⟾ 100=(x+y)1

⟾ x+y=100⟶(II)

Solving (I) & (II)  ⟾ x−y=20

⟾ x+y=100

​⟾ 2x=120

⟾ x=60km/h

⟾ y=40km/h