For the first function, you can input each of the values from 1 to 25 and your probabilities must sum to 1. This means that . But so , or . Hence, you must calculate the sum of the numbers from 1 to 25, which is equal to .
wow my book is terrible and doesn't mention these types of problems...just assigns them.
find the constant c for to make the following pdf function.
a. f(x) = cx where x = 1, 2, ... , 25.
b. f(x) = c(x+1)^3 where x = 0,1,2
c. f(x) = c(1/3)^x where x= 1, 2, 3, ...
i know what its asking for but i have absolutely no idea where to begin solving for c.