Statistics: Probability Rules
Quiz
•
Mathematics
•
11th Grade
•
Practice Problem
•
Hard
Anthony Clark
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following events are independent?
Drawing a King from a deck of cards and rolling a 5 on a die
Having a high GPA and getting a college scholarship for academics
The age of a driver and their likelihood of being in a car accident
Having brown hair and brown eyes
Answer explanation
Independent means there is no relationship between the two events - they do not affect each other.
2.
FILL IN THE BLANK QUESTION
1 min • 1 pt
A survey shows that 50% of adults in America approve of the president's recent policy statements. You select three adults at random. What is the probability that they all approve of the statements?
Answer explanation
ALL means the first AND the second AND the third approve of the statements. AND means multiply.
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Ms. Timlin collected data from her students and found that 45% have brown eyes, 20% have blue eyes, and the rest have other colored eyes. If you select a student at random, what is the probability that they have brown or blue eyes?
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If A and B are independent, then you can ___ their probabilities to find the probability of A ___ B
multiply, and
add, and
multiply, or
add, or
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If A and B are mutually exclusive, then you can ___ their probabilities to find the probability of A ___ B
multiply, and
add, and
multiply, or
add, or
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What do you call a random variable with possible values that form a finite or countable set?
continuous
discrete
finite
infinite
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What term is used to describe the average value of a discrete random variable over numerous trials of an experiment?
mean
probability
standard deviation
variance
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