Which of the following is correct about a probability distribution? Select one: a. The sum of all probabilities of possible outcomes must equal 1.0. b. The outcomes must be mutually exclusive. c. The probability of each outcome must be between 0.0 and 1.0 inclusive d. All of these answers are correct

All of the answers are correct.

Step-by-step explanation:

A probability distribution is the collection of probabilities which defines the likelihood of observing all the various outcomes of an experiment or event. A probability distribution has two main properties which are that:

• Each probability in the distribution consist of a value between 0 and 1.

• The sum of all probabilities in the distribution equals 1.

Also, in probability, an outcome is the possible result of an experiment and each possible outcome gotten is unique, therefore the different outcomes are mutually exclusive i.e. only one outcome can occur on each trial during the experiment.

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.