Edvard has to take a seven-question multiple-choice quiz in his sociology class. Each question has four choices for answers, of which only one is correct. Assuming that Edward guesses on all seven questions, what is the probability that he will answer a) all seven questions correctly, b) exactly four questions correctly, c) at least four questions correctly. a) The probability is (Type an integer or decimal rounded to five decimal places as needed.) b) The probability isO (Type an integer or decimal rounded five decimal places as needed.) c) The probability is (Type an integer or decimal rounded to five decimal places as needed.)
Edvard has to take a seven-question multiple-choice quiz in his sociology class. Each question has four choices for answers, of which only one is correct. Assuming that Edward guesses on all seven questions, what is the probability that he will answer a) all seven questions correctly, b) exactly four questions correctly, c) at least four questions correctly. a) The probability is (Type an integer or decimal rounded to five decimal places as needed.) b) The probability isO (Type an integer or decimal rounded five decimal places as needed.) c) The probability is (Type an integer or decimal rounded to five decimal places as needed.)
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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(See image attached - type an integer or decimal rounded to five decimal places as needed.)
Transcribed Image Text:Edward has to take a seven-question multiple-choice quiz in his sociology class. Each question has four choices for answers, of which only one is correct. Assuning that Edward guesses on all seven questions, what is the
probability that he will answer a) all seven questions correctly, b) exactly four questions correctly, c) at least four questions correctly.
a) The probability is
(Type an integer or decimal rounded to five decimal places as needed.)
b) The probability is
(Type an integer or decimal rounded to five decimal places as needed.)
c) The probability is
(Type an integer
decimal rounded to five decimal places as needed.)
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