Describe Likelihood
Experimental & Theoretical Probability of Simple Events
Experimental & Theoretical Probability of Compound Events
Make Predictions
100
Look at the spinner. Describe an event that is certain.
Spinning a number 1-4 OR spinning a natural number less than 5.
100
A number cube has sides 1 to 6. Ethan rolls the number cube 15 times and records his results. What is the experimental probability that her next roll will not be a 3? Write your answer as a fraction in simplest form. 
3/15 = 1/5
100
Complete a tree diagram for spinning a a 3 section spinner 3 times.
100
Without looking, Ryan pulls a marble from a bag that contains: 5 red, 25 blue, and 20 purple marbles. He records the color and returns the marble to the bag. If he repeats this 110 times, how many times can he expect to pull out a red marble?
x = 11 times out of 110 times Ryan can expect to pull out a red marble.
200
Look at the spinner. Describe an event that is impossible.
Rolling a 5 or a number greater than 4.
200
Use the spinner to answer the question.
P(Blue or Red) = ?
P(blue or red) = 75%
200
What is the probability of getting section 2 at least twice on a three section spinner if you spin it three times?
7/27
200
A number cube has sides labeled 1 to 6. Valerie rolls the number cube 24 times. How many times can she expect to roll a 1 or a 2?
Valerie can expect to roll a 1 or a 2 8 out of 24 times.
300
If the probability of an event is 8/10, which of the following would best describe the event?
a. The event will never occur
b. There is a small chance that the event will occur
c. The event is likely to occur
d. The event will definitely occur
c. The event is likely to occur
300
Use the spinner to answer the question.
P(not purple) = ?
P(not purple) =
15/16
300
A taco truck is giving away free tacos to the first 10 customers. The tacos can come in flour or corn tortillas with 3 options of fillings. The tacos will be given out randomly. Describe a simulation that could be used to predict the taco you are likely to get.
Flip a coin for corn or flour. Roll a die for the filling. {1, 2}=filling 1; {3,4}=filling 2; {5,6}=filling 3
300
The experimental probability of rain in a certain town is 15%. In the next 60 days, how many days can one expect rain?
9 days out of 60 days one can expect it to rain.
400
Which of the following best describes the probability of the event: picking a number divisible by 3 from a jar of papers labeled 1-12?
a. 1
b. Close to 1
c. Close to 1/2
d. Close to 0
4/12 = 1/3
so d. Close to 0
400
Use the spinner to answer the question.
P(not purple and not green) = ?
P(not purple and not green) =
1/8
400
Woodfield mall has 3 floors; 1, 2, and 3. Each floor has 10 stores (A, B, C, D, E, F, G, H, I, J). What is the probability that the chosen store will be store D and any floor above 1? Write your answer as a fraction in simplest form, a decimal rounded to the nearest hundredth, and a percent rounded to the nearest whole.
1/15, 0.067, 7%
400
Amazon claims that only 5% if it's orders are returned. Last week, there were 50,000 orders in our area. 3,000 were returned. Do you agree or disagree with Amazon's claim. Use numbers and words to justify your thinking.
I do not agree because 3,000 of 50,000 is 6% which is more than 5%.
500
P(mean score> 95%) = ?
a. 0
b. 1/2
c. Unlikely
d. Likely
e. 1
c. Unlikely - based on our data, we have only gotten 95% or above one time out of all of our tests.
500
Does the outcome of a simple event effect the outcome of another simple event?
No - rolling a die once does not affect the probability of the outcome of rolling the die again.
500
Hannah has 3 pairs of shoes, 6 tops, and 2 pairs of pants. How many outfits consisting of 1 pair of shoes, 1 shirt, and 1 pair of pants can she make?
36 outfits
500
There is a 20% chance of rain each week in Carpentersville. Ms. Sharma used a simulation to find the experimental probability of it raining in the next month. Each trial represents four weeks in a month. 
4/10 or 40%