

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


A. 
The outcomes of each trial must be dependent. 


B. 
The probabilities in each trial must be independent. 


C. 
Each trial has exactly two outcomes. 


D. 
There must be a fixed number of trials. 


Hint 


2. 
Determine the probability of getting exactly 2 heads if 4 fair coins are tossed. 


A. 

B. 



C. 

D. 



Hint 


3. 
Francis guesses at all 6 true/false questions in a trivia game. What is the probability that he guesses correctly on at least 5 of the questions? 


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. 
0.1106 


C. 
0.1748 
D. 
0.0962 


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. 
0.1556 


C. 
0.1843 
D. 
0.1124 


Hint 

