

1. 
Which statement is not true for a binomial experiment? 


A. 
There must be a fixed number of trials. 


B. 
The outcomes of each trial must be dependent. 


C. 
Each trial has exactly two outcomes. 


D. 
The probabilities in each trial must be independent. 


Hint 


2. 
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 


3. 
Kyle guesses at all of the 5 questions of a multiple choice quiz. Find the probability that he gets exactly 3 answers correct if each question has 4 choices. 


A. 

B. 



C. 

D. 



Hint 


4. 
A number cube is tossed four times. Find the probability that at least two 6s are tossed. 


A. 
0.1319 
B. 
0.0962 


C. 
0.1106 
D. 
0.1748 


Hint 


5. 
Eric guesses at all 8 questions on a true/false test. Find the probability that he got at least 6 correct. 


A. 
0.1618 
B. 
0.1528 


C. 
0.1445 
D. 
0.1353 


Hint 

