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If X is random variable taking values 0,1,2,3, with following probability distribution function: X 0 1 2 3 P(X=x)=f(x) 0.2 0.3 ? 0.4 Complete the

If X is random variable taking values 0,1,2,3, with following probability distribution function:

X	0	1	2	3
P(X=x)=f(x)	0.2	0.3	?	0.4

Complete the above table
What is P(X<=2)?
What is P(X=4)?
What is mean of X?
What is mean of Y = 3X+4?

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