Name: 
 

AP Statistics Review Quiz 6A


Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 1. 
Which of the following pairs of events are disjoint (mutually exclusive)?
a.
A:  the odd numbers;  B:  the number 5
b.
A:  the even numbers;  B:  the numbers greater than 10
c.
A:  the numbers less than 5;  B:  all negative numbers
d.
A:  the numbers above 100;  B:  the numbers less than –200
e.
A:  negative numbers;  B:  odd numbers
 

 2. 
An assignment of probability must obey which of the following?
a.
The probability of any event must be a number between 0 and 1, inclusive.
b.
The sum of all the probabilities of all outcomes in the sample space must be exactly 1.
c.
The probability of an event is the sum of the outcomes in the sample space which make up the event.
d.
All of the above.
e.
A and B only.
 

 3. 
Event A occurs with probability 0.2. Event B occurs with probability 0.8. If A and B are disjoint (mutually exclusive), then
a.
P(A and B) = 0.16.
b.
P(A or B) = 1.0.
c.
P(A and B) = 1.0.
d.
P(A or B) = 0.16.
e.
Both A and B are true.
 

 4. 
In a particular game, a fair die is tossed. If the number of spots showing is either four or five, you win $1. If the number of spots showing is six, you win $4. And if the number of spots showing is one, two, or three, you win nothing. You are going to play the game twice.

The probability that you win $4 both times is
a.
1/6
b.
1/3
c.
1/36
d.
1/4
e.
1/12
 



 
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