

1. 
The probability of tossing a head on a bent coin is 25%. Find the probability of getting 3 heads if the coin is tossed three times. 


A. 

B. 



C. 

D. 



Hint 


2. 
A number cube is tossed four times. Find the probability that at least two 6s are tossed. 


A. 
0.0962 
B. 
0.1748 


C. 
0.1106 
D. 
0.1319 


Hint 


3. 
The probability of tossing a tail on a bent coin is . The coin is tossed 5 times. Find the probability of tossing exactly 3 tails. 


A. 
0.3028 
B. 
0.3292 


C. 
0.3114 
D. 
0.2906 


Hint 


4. 
Eric guesses at all 8 questions on a true/false test. Find the probability that he got at least 6 correct. 


A. 
0.1528 
B. 
0.1353 


C. 
0.1445 
D. 
0.1618 


Hint 


5. 
Kathy guesses at all of the 10 questions on a multiple choice exam. Find the probability that she gets 3 questions correct if each question has 5 choices. 


A. 
0.2013 
B. 
0.1843 


C. 
0.1124 
D. 
0.1556 


Hint 

