Mathematics, 22.09.2019 16:50 naomicervero

At an elementary school carnival, students can draw a rubber duck out of a tub of water. each duck has a number written on the bottom of it which correlates with a prize. there are a total of 8 ducks in the tub. two ducks have a 5 on them, four ducks have a 6 on them, and two duck has a 7 on it. what is the expected value of a duck?
a. 8.25
b. 6.85
c. 25
d. 4

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