_ Each day Donnaand Mary toss a coin to see who buys the other person coffee ($2.28 a cup). One tosses and the other . ' calls the outcome. It 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 tosses the coin. and that Donna calls the outcome. Find Manfs expected ' payback. Is this a fair game? i. . ' Mary's expected payback is $D. (Type an Integer or a decimal.)