An exam has a multiple-choice section consisting of 11 questions, each of which has four possible answers. A student guesses randomly on all 11 questions. What is the probability that the number of questions the student gets correct is within 1 standard deviation of the expected value of the number of correct answers

An exam has a multiple-choice section consisting of 11 questions, each of which has four possible answers. A student guesses randomly on all 11 questions. What is the probability that the number of questions the student gets correct is within 1 standard deviation of the expected value of the number of 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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