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ECON 2843
Name
KEY
Quiz 2
Spring 2005
ID #
Students must
show all work
on problems that involve calculation.
Questions 1  3 refer to the following table, which gives the joint probability distribution for workers
and shifts at Flex Furniture Company.
The company has decided to conduct random drug
testing.
Shift
1
2
3
Total
Worker
Male
.20
.15
Female
.24
.57
Total
.25
.32
1. If a female is selected for testing, what is the probability that she will be a shift 2 worker?
a.
.15
b.
.28
c.
.35
d.
.49
*
e.
.65
2. What is the probability that a worker will NOT work on shift 1?
a.
.15
b.
.25
c.
.35
d.
.68
e.
.75
*
3.
The primary goal of NCAA division 1 basketball teams is to earn a place in the Final 4 and
participate in March Madness.
How many ways are there to obtain the Final 4 from the
field of 64 teams who will enter the tournament?
635,376
1
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View Full DocumentQuestions 4 – 7 refer to the following.
An Econ 2843 course consists of sophomores and juniors.
Ten percent of the students who take
Econ 2842 fail the course.
Among those students who pass, 25% are sophomores. 67.5% of the
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 Spring '08
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