David has 13 unblemished 8-sided (1-8) dice (fair dice). If all the dice are thrown simultaneously, calculate: a. Expected sum of the values of all 13 dice that are rolled simultaneously. b. The variance of the sum of the values of the 13 dice that are rolled simultaneously

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 4ECP: Show that the probability of drawing a club at random from a standard deck of 52 playing cards is...
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1. David has 13 unblemished 8-sided (1-8) dice (fair dice). If all the dice are thrown simultaneously, calculate:
a. Expected sum of the values of all 13 dice that are rolled simultaneously.
b. The variance of the sum of the values of the 13 dice that are rolled simultaneously

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