Suppose Katie took a four-question true-false test. If she answered each question true or false at random, what is the probability of the event that she answered exactly one of the questions incorrectly? Hint: Think of an outcome as a "word". For example, the word CIIC could represent the outcome that Katie answered the first and last questions correctly. Or, draw a tree

Suppose Katie took a four-question true-false test. If she answered each question true or false at random, what is the probability of the event that she answered exactly one of the questions incorrectly? Hint: Think of an outcome as a "word". For example, the word CIIC could represent the outcome that Katie answered the first and last questions correctly. Or, draw a tree

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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