Q7 of 77 Page 32

A random variable has the following probability distribution:

Write the value of P (X ≥3).


The probability distribution of X is:



We Know that



Therefore


⇒ k+2k+3k+4k=1


⇒ 10k=1



P(X≥3)=P(X=3)+P(X=4)


⇒ 3k+4k





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