Question

Select all of the following that are true about probability mass functions of a discrete distributions? Group of answer choices

The probability of getting any possible value of x is greater than or equal to 0
The sum of the probabilities of all possible values of x is 1
The probability mass function is the probability that the random variable X is less than or equal to the one of the possible outcomes.
It is the derivative of the CDF.

Answer 1

Explanation:

The following are true about probability mass functions of a discrete distributions:

The probability of getting any possible value of x is greater than or equal to 0

The sum of the probabilities of all possible values of x is 1

The following is not true about probability mass functions of a discrete distributions:

The probability mass function is the probability that the random variable X is less than or equal to the one of the possible outcomes.

It is the derivative of the CDF