Probability Recap
Authored by Matthew Goodman
Mathematics
12th Grade
Used 9+ times
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16 questions
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1.
MATCH QUESTION
1 min • 1 pt
Match the symbols with their appropriate meaning and usage.
Intersection -- and
∩
Given -- conditional
|
Union -- or
U
2.
MATH RESPONSE QUESTION
1 min • 1 pt
According to the two-way table, if we randomly-select a person, what is the probability that they prefer yoga? Write your answer as an unreduced fraction.
Mathematical Equivalence
ON
3.
MATH RESPONSE QUESTION
1 min • 1 pt
According to the two-way table, if we randomly-select a person, what is the probability that they prefer Swimming? Write your answer as an unreduced fraction.
Mathematical Equivalence
ON
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Now, let's use our answers from the previous questions:
P(Yoga) = 35/150 and P(Swimming) = 40/150
Calculate P(Yoga U Swimming)
As you saw, U means or. We use the _________ rule to find these types of probabilities.
5.
MATH RESPONSE QUESTION
1 min • 1 pt
Now, let's use our answers from the previous questions:
P(Yoga) = 35/150 and P(Swimming) = 40/150
Calculate P(Yoga U Swimming)
Add the two probabilities together. Do NOT subtract yet.
Mathematical Equivalence
ON
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Hopefully, you found the last answer to be 75/150 by adding the two together.
Are the events Yoga and Swimming mutually exclusive?
Yes!
No!
What?
Answer explanation
Remember that mutually exclusive means the events CANNOT occur together. So, if two events are mutually exclusive, the probability of event 1 and event 2 happening at the same time is 0.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Hopefully, you found the last answer to be 75/150 by adding the two together.
Based on your answer to the last question, do we need to subtract any overlap?
Yes!
No!
What?
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