8 4's ON FOUR 4-SIDED DICE. Let X be the number of 4's when rolling four 4-sided dice. a) What is P(X 0)? b) What is P(X 2)? c) What is the expected value of X? (This is denoted E(X).)

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter9: Counting And Probability
Section9.4: Expected Value
Problem 1E: If a game gives payoffs of $10 and $100 with probabilities 0.9 and 0.1, respectively, then the...
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8 4's ON FOUR 4-SIDED DICE. Let X be the number of 4's when rolling four 4-sided dice.
a) What is P(X = 0)?
b) What is P(X = 2)?
c) What is the expected value of X? (This is denoted E(X).)
Transcribed Image Text:8 4's ON FOUR 4-SIDED DICE. Let X be the number of 4's when rolling four 4-sided dice. a) What is P(X = 0)? b) What is P(X = 2)? c) What is the expected value of X? (This is denoted E(X).)
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