In an exam, there are 5 questions to be answered as either true or false. A good answer gives 2 points, and a bad answer is marked as -1 point. A student who has not prepared for his exam decided to answer these 5 questions at random. Let X be the mark that this student will get. (a) Give the discrete support of the random variable X (that is the set of all possible results (b) What is the probability mass function of X? (c) Calculate P(X > 5).

In an exam, there are 5 questions to be answered as either true or false. A good answer gives 2 points, and a bad answer is marked as -1 point. A student who has not prepared for his exam decided to answer these 5 questions at random. Let X be the mark that this student will get. (a) Give the discrete support of the random variable X (that is the set of all possible results (b) What is the probability mass function of X? (c) Calculate P(X > 5).

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Description: In an exam, there are 5 questions to be answered as either true or false. Agood answer gives 2 points, and a bad answer is marked as -1 point. A student who hasnot prepared for his exam decided to answer these 5 questions at random. Let X be themark

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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