A red die and a blue die are rolled. You win or lose money depending on the sum of the values of the two dice. If the sum is 3, 10, or 12, you win $5. If the sum is 5 or 11, you win $1. If the sum is any other value (2, 4, 6, 7, 8, or 9), you lose $2. Let X be a random variable that corresponds to your net winnings in dollars. What is the expected value of X? E[X] Ex: 1.23

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 15CR
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Jump to level 1
A red die and a blue die are rolled. You win or lose money depending on the sum of the values of the two dice.
If the sum is 3, 10, or 12, you win $5.
If the sum is 5 or 11, you win $1.
If the sum is any other value (2, 4, 6, 7, 8, or 9), you lose $2.
Let X be a random variable that corresponds to your net winnings in dollars. What is the expected value of X?
E[X] Ex: 1.23
Transcribed Image Text:Jump to level 1 A red die and a blue die are rolled. You win or lose money depending on the sum of the values of the two dice. If the sum is 3, 10, or 12, you win $5. If the sum is 5 or 11, you win $1. If the sum is any other value (2, 4, 6, 7, 8, or 9), you lose $2. Let X be a random variable that corresponds to your net winnings in dollars. What is the expected value of X? E[X] Ex: 1.23
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