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Name: _________ Section#: ___ Instructor/T.A.: ______ _
Math 110 Final Exam December 14, 2006
Instructions: Please write your work, including formulas, in the spaces provided. All of your
work must be shown to receive any credit. Leave answers as exact fractions, except when stated
otherwise_ 
I Box I your final answers.
1. Edna's ElfWear shop makes and sells wool, cotton and polyester elfhats in red, green or white.
Edna has the following number of hats in stock.
Red Green White Total
Wool 20 55 35 no
Cotton 45 40 15 100
Polyester 30 36 4 70
Total 95 131 54 280
One hat is selected at random:
(You may leave your answers as unsimplified fractions.)
a. [3 points] What is the probability that the hat chosen is cotton?
b. [3 points] What is the probability that the hat chosen was not green?
c. [3 points] What is the probability that the hat was polyester, given that the hat chosen was
red?
d. [3 points] What is the probability that the hat was a red wool hat?
e. [3 poin...
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