Math Problem Statement
The discrete random variable R R is such that R ∈ { 1 , 2 , 3 , 4 } R∈{1,2,3,4}.Given that P ( R
r )
k ( r + 1 ) r + 2 P(R=r)= r+2 k(r+1) , then find.
(a) The value of the constant k k.
(b) P ( R ⩽ 2 ) P(R⩽2).
N o t e : Note:Give your answer in simplest fraction form only.
Solution
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Math Problem Analysis
Mathematical Concepts
Probability Theory
Discrete Random Variables
Probability Mass Function
Formulas
Probability mass function for discrete random variables
Theorems
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Suitable Grade Level
Undergraduate
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