Multiple choice quiz. In a multiple choice quiz there are 5 questions and 4 choices for each question (a, b, c, d). Robin has not studied for the quiz at all, and decides to randomly guess the answers. What is the probability that (a) the first question she gets right is the 3rd question? (b) she gets exactly 3 or exactly 4 questions right? (c) she gets the majority of the questions right?
Multiple choice quiz. In a multiple choice quiz there are 5 questions and 4 choices for each question (a, b, c, d). Robin has not studied for the quiz at all, and decides to randomly guess the answers. What is the probability that (a) the first question she gets right is the 3rd question? (b) she gets exactly 3 or exactly 4 questions right? (c) she gets the majority of the questions right?
College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter9: Counting And Probability
Section: Chapter Questions
Problem 14T: An unbalanced coin is weighted so that the probability of heads is 0.55. The coin is tossed ten...
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Question
Multiple choice quiz. In a multiple choice quiz there are 5 questions and 4 choices for
each question (a, b, c, d). Robin has not studied for the quiz at all, and decides to randomly guess
the answers. What is the probability that
(a) the first question she gets right is the 3rd question?
(b) she gets exactly 3 or exactly 4 questions right?
(c) she gets the majority of the questions right?
Please write clearly so I can follow the steps.
Expert Solution
Step 1
Given Information:
The number of questions, n=5
The number of choices of the question, x=4
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