Consider the Additional Notes for Lesson 4 on the Study Guide. Choose the statements below that MUST be true for a probability model to be uniform.(1 point)

Question

Responses choose one

All outcomes have the same probability.
All outcomes have the same probability.

The probability of each outcome is between 0 and 1.
The probability of each outcome is between 0 and 1.

The sum of the probabilities is 1.
The sum of the probabilities is 1.

If the experiment is done repeatedly for n trials, then the expected number of times each outcome E would happen is given by n·(E).

Answer 1

For a probability model to be uniform, the statements that must be true are:

1. All outcomes have the same probability.
2. The probability of each outcome is between 0 and 1.
3. The sum of the probabilities is 1.

The fourth statement about the expected number of times each outcome occurs is related to probability but isn't a requirement for the model to be uniform. Therefore, the first three statements are the ones that must hold true for a uniform probability model.