A quiz is made up of 4 questions, where correct answers earn 1 point and incorrect answers earn zero points. Let the random variable Y = the sum of a student's earned points. A given student has probability .8 of answering each question correctly on this quiz. Assuming each question is independent, what is E(Y)? Y=2 (i.e., score 2 total points in 4 questions)

A quiz is made up of 4 questions, where correct answers earn 1 point and incorrect answers earn zero points. Let the random variable Y = the sum of a student's earned points. A given student has probability .8 of answering each question correctly on this quiz. Assuming each question is independent, what is E(Y)? Y=2 (i.e., score 2 total points in 4 questions)

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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