Probability function

Question

For what value of c is the following a probability function?

 

X       1     2     3     4     5

P(x)  4c  6c   2c    3c    5c

Answer 1

Chad,

          In order for a function to be a discrete probability distribution the elements must add to 1. So 4c+6c+2c+3c+5c=1

which simplifies to 20c=1 so c=1/20,,,,, make sense?

 

Jim