A quiz has 10 multiple choice questions with 3 choices for each question. Answer the following for someone who randomly chooses answers to the questions.   Find the probability for getting exactly 4 correct answers.   Answer: ________________                 Find the probability for getting at least 2 correct answers.   Answer: ________________                   Find the probability for getting 2 or 3 incorrect answers.   Answer: ________________

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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  1. A quiz has 10 multiple choice questions with 3 choices for each question. Answer the following for someone who randomly chooses answers to the questions.

 

  1. Find the probability for getting exactly 4 correct answers.

 

Answer: ________________

 

 

 

 

 

 

 

 

  1. Find the probability for getting at least 2 correct answers.

 

Answer: ________________

 

 

 

 

 

 

 

 

 

  1. Find the probability for getting 2 or 3 incorrect answers.

 

Answer: ________________

 

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