Calculate the probability of randomly guessing the given number of correct answers on a 20-question multiple choice exam that has choices A, B, C, and D for each question. 7. 5 8. 10 9. 15 10. 20

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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For 7 and 8, round to the nearest thousandth. 

 

7.   

 

 

 

 

8.   

 

 

 

 

For 9 and 10, put your answer in scientific notation.  

 

9.   

 

 

 

 

10.   

 

 

 

Calculate the probability of randomly guessing the given number of
correct answers on a 20-question multiple choice exam that has choices
A, B, C, and D for each question.
7. 5
8. 10
9. 15
10. 20
Transcribed Image Text:Calculate the probability of randomly guessing the given number of correct answers on a 20-question multiple choice exam that has choices A, B, C, and D for each question. 7. 5 8. 10 9. 15 10. 20
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