A multiple choice test consists of 12 questions, each question has three choices. If a student checks the answers randomly, find the probability that the student gets (a) five correct answers, b) between four and eight inclusive correct answers, c) at most five correct answers

A multiple choice test consists of 12 questions, each question has three choices. If a student checks the answers randomly, find the probability that the student gets (a) five correct answers, b) between four and eight inclusive correct answers, c) at most five correct answers

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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From the provided information,

A multiple choice test consists of 12 questions that is n = 12

Each question has three choices that is probability of correct answer (p) = 0.3333

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