Discrete Probability Distributions

• Yes, because all of the probabilities are between 0 and 1 inclusive and the sum of all the probabilities is 1.

• No, some of probabilities are not between 0 and 1 inclusive

• No, the sum of all the probabilities is not 1.

• Yes, because the distribution is symmetric

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 3

• 0.0625

• 0.250

• 0.125

• 0.750

What is the probability distribution of getting a sum of 5

• 0.50

• 0.75

• 0.125

• 0.25

All of the probabilities in a probability distribution add up to what?

• 0

• 10

• 1

• .5

Find the missing value for P(X=5) in the probability ditribution: Number of Toys | Probability 0| 0.03 1| 0.16 2| 0.30 3| 0.23 4| 0.17 5| ?

• 0.11

• 0.21

• 0.01

• 0.31

Find P( X = 4).

• 1.00

• 0.91

• 0.02

• 0.07

Is the number of cheeseburgers a fast-food restaurant serves each day discrete or continuous?

• Discrete

• Continuous

Is the number of orange Skittles in a bag discrete or continuous data?

• Discrete

• Continuous

The table represents the probability of guessing correct on a 5 question true-false quiz. Find the probability all 5 questions correct.

• .03125

• .15625

• .3125

• .1875