I.

1. How do you describe a discrete random variable?

2. How do you describe a continuous random variable?

3. Give three examples of discrete random variable.

4. Give three examples of continuous random variable.

5. What do you notice about the probability values of random variable in each probability distribution?

6. What is the sum of the probabilities of a random variable?

7. Why should the sum of the probabilities in a probability distribution is always equal to 1?

8. What is the shape of most probability distributions? Why do you think so?

II. Number of Defective COVID-19 Rapid Antibody Test Kit

Suppose three test kits are tested at random. Let D represent the defective test kit and let N represent the non-defective test kit. If we let X be the random variable for the number of defective test kits, construct the probability distribution of the random variable X.