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STA 4321/5325
Spring 2010
Sample Final
Full Name:
On my honor, I have neither given nor received unauthorized aid on this examination.
Signature:
This is a 2 hour exam. There are 6 problems, worth a total of 60 points.
Remember to show
your work.
Answers lacking adequate justi±cation may not receive full credit. You may use four
lettersized sheets (the same size as the lecture notes) of your own notes and a pocket calculator.
(You are not required to bring a calculator  you may leave your answers in a form from which
the numerical answer could be immediately calculated.) You may
not
use any books, other
references, or textcapable electronic devices.
1. For an upcoming civil trial, 25 people are called for jury duty. Of these, 15 are men and 10
are women. Six people are needed for the jury. Let
A
= Event that 3 men and 3 women are chosen
;
and
B
= Event that atleast 4 men are chosen
:
(a) Provide
P
(
A
).
[2 pts]
(b) Provide
P
(
B
).
[3 pts]
(c) Are
A
and
B
mutually exclusive? Why?
[2 pts]
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 Spring '08
 Staff
 Probability

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