The problem involves a random variable x that takes on the values 1, 2, or 3 with associated probabilities dependent on a variable k. Participants are tasked with finding the appropriate value of k, the mean, and the cumulative distribution function.
The discussion is ongoing, with some participants providing hints and emphasizing the importance of showing work before receiving help. There is recognition of the need for clarity on the definitions and formulas involved, particularly regarding the cumulative distribution function.
Some participants express their lack of familiarity with statistics, indicating that they are seeking guidance rather than direct answers. The forum guidelines emphasize the necessity of demonstrating some effort before receiving assistance.
maria_01 said:Homework Statement
The random variable x takes on the values 1, 2, or 3 with probabilities (1 + 3k)/3, (1 + 2k)/3, and (0.5 + 5k)/3, respectively.
Homework Equations
i. Find the appropriate value of k.
ii. Find the mean.
iii. Find the cumulative distribution function.
The Attempt at a Solution
maria_01 said:Also if I knew how to do it, I wouldn't be asking for help. My attention is not to just get the answers but atleast know which formulas to use and how to imply them. I"m really stuck at cumulative distribution function.
maria_01 said:I'm an IT person clueless of statistics.