

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


A. 
The outcomes of each trial must be dependent. 


B. 
There must be a fixed number of trials. 


C. 
Each trial has exactly two outcomes. 


D. 
The probabilities in each trial must be independent. 


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. 
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. 
Kevin has an email account and checks his email several times per day. The probability of Kevin receiving an email from his friends is . Suppose he checks his email 6 times in a day. Find the probability that Kevin gets a message at least 4 of the times he checks his email throughout the day. 


A. 
0.5 
B. 
0.54432 


C. 
0.53962 
D. 
0.4996 


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. 
0.1556 
B. 
0.1124 


C. 
0.1843 
D. 
0.2013 


Hint 

