SOLUTION: Please help me solve this problem : Find k so that the function given by p(x) = k /(x + 1), x = 1, 2, 3, 4 is a probability function. Graph the density and cumulative di

Question 1177286: Please help me solve this problem :
Find k so that the function given by
p(x) = k /(x + 1), x = 1, 2, 3, 4
is a probability function. Graph the density and cumulative distribution functions.
Thank you
Answer by Edwin McCravy(20054) (Show Source): You can put this solution on YOUR website!

, x = 1, 2, 3, 4

the sum of the values must be 1.





Multiply by LCM = 60













Multiply top and bottom by 77












Graph of probability function 

 x = 1, 2, 3, 4



To get the the cumulative distribution function: 





 



Here's the graph of the cumulative distribution function which accumulates
as it goes:



Edwin

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