An exam has 16 multiple choice questions with four choices with one correct answer each. If we just randomly guess on each of the 16 questions. what is the expected number of correct guesses is?

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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An exam has 16 multiple choice questions with four choices with one correct answer each. If we just randomly guess on each of the 16 questions. what is the expected number of correct guesses is?
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