Answer to Question #152253 in Statistics and Probability for raj

Statistics and Probability

Question #152253

𝑷(𝑿 = 𝒙)=k/x+1;where x = 1,2,3

Expert's answer

I assume that the question asks for the value of k.

"\\sum P(xi)=1"

Thus "\\frac{k}{2}+ \\frac{k}{3}+ \\frac{k}{4}=1"

"\\frac{6k+4k+3k}{12}=1"

"\\frac{13k}{12}=1"

"K=\\frac{12}{13}"

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