

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


A. 
Each trial has exactly two outcomes. 


B. 
The outcomes of each trial must be dependent. 


C. 
The probabilities in each trial must be independent. 


D. 
There must be a fixed number of trials. 


Hint 


2. 
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 


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. 
0.1445 
B. 
0.1618 


C. 
0.1353 
D. 
0.1528 


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. 
0.1124 
B. 
0.1843 


C. 
0.1556 
D. 
0.2013 


Hint 

