

1. 
Raphael is conducting a survey of families with 2 children. If a family is selected at random, what is the probability that the family will have exactly 2 girls if the second child is a girl? 


A. 
1 
B. 



C. 

D. 



Hint 


2. 
In Mr. Jonas' homeroom, 70% of the students have brown hair, 25% have brown eyes, and 5% have both brown hair and brown eyes. A student is excused early to go to a doctor's appointment. If the student has brown hair, what is the probability that the student also has brown eyes? 


A. 

B. 



C. 

D. 



Hint 


3. 
Use the table below. Given that a student is in the seventh grade, what is the probability that she has brown eyes? 





A. 

B. 



C. 

D. 



Hint 


4. 
Using a standard deck of 52 cards, find the probability of choosing a 10 given that the card is red. 


A. 

B. 



C. 

D. 



Hint 


5. 
In Mrs. Lerman's classroom, 75% of the students wear watches, 30% wear eyeglasses, and 20% wear both watches and eyeglasses. A student is called to the board to explain a concept. If the student wears a watch, what is the probability that the student also wears eyeglasses? 


A. 

B. 



C. 

D. 



Hint 

