Discrete and Continuous Random Variable

Classify: The numbers of cheeseburgers a fast-food restaurant serves each day

• None of these

• Abstract

• Continuous

• Discrete

• Yes, because all of the probabilities are between 0 and 1 inclusive and the sum of all the probabilities is 1.
• No, all probabilities are not be between 0 and 1 inclusive
• No, the sum of all the probabilities is not 1.
• Yes, because the distribution is symmetric

• Yes, because all of the probabilities are between 0 and 1 inclusive and the sum of all the probabilities is 1.
• No, all probabilities are not be between 0 and 1 inclusive
• No, the sum of all the probabilities is not 1.
• Yes, because the distribution is symmetric

What is the numerical quantity assigned to the outcome of an experiment usually denoted by an uppercase letter such as X?

• Frequency

• Probability

• Random variable

• Sample

Determine which of the following distribution is NOT a probability distribution.

• A

• B

• C

• D

What are the random variables in the given problem.

• x = 1, 2, 3

• x = 0, 1, 2, 3

• x = 2, 3, 4, 5, 6

• x = 0, 2, 4, 6, 8

What is the probability distribution of getting a sum of 2?

• 0.0625

• 0.6250

• 0.125

• 0.375

What is the probability distribution of getting a sum of 3

• 0.0625

• 0.250

• 0.125

• 0.750

What is the probability distribution of getting a sum of 6

• 0.50

• 0.75

• 0.125

• 0.25

Y is the number of women taller than 68 inches in a random sample of 500 women. Is Y discrete or continuous and what are the possible values of Y?