If I roll two six-sided dice, what is the mean and variance of their difference?

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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If I roll two six-sided dice, what is the mean and variance of their difference?
(note, the difference of 3 and 1 is 3 - 1 = 2, but the difference of 1 and 3 is
1-3 = -2)
a)
What is the mean? (express as an integer or reduced fraction)
Reduce your answer to lowest terms.
b)
What is the variance? (express as an integer or reduced fraction)
Reduce your answer to lowest terms.
Submit part
Transcribed Image Text:If I roll two six-sided dice, what is the mean and variance of their difference? (note, the difference of 3 and 1 is 3 - 1 = 2, but the difference of 1 and 3 is 1-3 = -2) a) What is the mean? (express as an integer or reduced fraction) Reduce your answer to lowest terms. b) What is the variance? (express as an integer or reduced fraction) Reduce your answer to lowest terms. Submit part
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