You are taking a 10 question multiple-choice test. If each question has four choices and you guess on each question, what is the probability of getting exactly 7 questions correct? a. 0.3250% b. 0.3090% c. 0.3520% d. 0.3900%

You are taking a 10 question multiple-choice test. If each question has four choices and you guess on each question, what is the probability of getting exactly 7 questions correct? a. 0.3250% b. 0.3090% c. 0.3520% d. 0.3900%

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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Question

You are taking a 10 question multiple-choice test. If each question has four choices and you guess on each question, what is the probability of getting exactly 7 questions correct?

a. 0.3250%

b. 0.3090%

c. 0.3520%

d. 0.3900%

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