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Each day Donna and Mary toss a coin to see who buys the other person coffee ($1.77 a cup). One tosses and the other calls the outcome. If the person who calls the outcome is correct, the other buys the coffee, otherwise the caller pays. Assume that an honest coin is used, that Mary losses the coin, and that Donna calls the outcome. Find Mary's expected payback Is this a fair game? Mary's expected payback is $(Type an integer or a decimal)

Each day Donna and Mary toss a coin to see who buys the other person coffee ($1.77 a cup). One tosses and the other calls the outcome. If the person who calls the outcome is correct, the other buys the coffee, otherwise the caller pays. Assume that an honest coin is used, that Mary losses the coin, and that Donna calls the outcome. Find Mary's expected payback Is this a fair game? Mary's expected payback is $(Type an integer or a decimal)

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Each day Donna and Mary toss a coin to see who buys the other person coffee ($1.77 a cup). One tosses and the other calls the outcome. If the person who calls the outcome is correct, the other buys the coffee, otherwise the caller pays. Assume that an honest coin is used, that Mary losses the coin, and that Donna calls the outcome. Find Mary's expected payback Is this a fair game? Mary's expected payback is $(Type an integer or a decimal)
Transcribed Image Text:Each day Donna and Mary toss a coin to see who buys the other person coffee ($1.77 a cup). One tosses and the other calls the outcome. If the person who calls the outcome is correct, the other buys the coffee, otherwise the caller pays. Assume that an honest coin is used, that Mary losses the coin, and that Donna calls the outcome. Find Mary's expected payback Is this a fair game? Mary's expected payback is $(Type an integer or a decimal)
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