WorksheetsTopic Test Chapter 4 - Discrete Probability Distribution
Total questions: 10
Worksheet time: 27mins
Classify: The numbers of cheeseburgers a fast-food restaurant serves each day
Discrete
Continuous
Which one of the following is a discrete random variable?
Sam's height
Sam weight
Time Sam's runs the 110 m hurdles
Amount of Sam's brothers and sisters
Classify: Height of a plant measured each day for 30 days.
Discrete
Continuous
Is this a probability distribution?
No
Yes
The table represents the probability of guessing correct on a 5 question true-false quiz. Find the mean and the standard deviation.
μ = .4; σ = 7.5
μ = 2.5; σ = 1.1
μ = 3; σ = 1.3
μ = .1; σ = 0
Classify: The time it takes for a light bulb to burn out.
Discrete
Continuous
X 0 1 2 3 4 5
P(X) 0.24 0.37 0.20 0.11 0.05 0.03
What is the probability that a randomly chosen household has at least two cars?
Which of the following is NOT a requirement of a discrete probability distribution?
The sum of the values for the random variable x must add up to 1.
There is a discrete numerical (not categorical) random variable x, and its number values are associated with corresponding probabilities.
The sum of the probabilities must all add up to 1.
Every individual probability must have a value between 0 and 1 inclusively.
Eva flips a coin. If she gets heads, she wins $4. If she gets tails, she loses $3. What is her expected value of a coin flip?
$1
$0.50
-$0.50
$0
