SOLUTION: Suppose that you have 5 quarters, 5 dimes, 5 pennies, and 10 nickels. You then reach in and choose a random coin to tip your barber. What is the barber's expectation? What is the

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Question 974866: Suppose that you have 5 quarters, 5 dimes, 5 pennies, and 10 nickels. You then reach in and choose a random coin to tip your barber. What is the barber's expectation? What is the barber's most likely tip?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Wow big tipper.
P%28Q%29=5%2F25=1%2F5
P%28D%29=5%2F25=1%2F5
P%28P%29=5%2F25=1%2F5
P%28N%29=10%2F25=2%2F5
So then,
E=%281%2F5%29%280.25%29%2B%281%2F5%29%280.10%29%2B%281%2F5%29%280.01%29%2B%282%2F5%29%285%29
E=%280.05%29%2B%280.02%29%2B%280.002%29%2B%280.08%29
E=0.092
9.2 cents