For the following cumulative distribution function for a discrete random variable X, a. Find the probability mass

Question:

For the following cumulative function for a discrete random variable X,

For the following cumulative distribution function for a discrete random

a. Find the probability mass function. Show why it is a valid probability mass function.
b. What is the probability that X will be more than 2?
c. Given that X is at most 2, what is the probability that it is positive?
d. Given that X is positive, what is the probability that it will be at least

Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...