Quiz 4 Working Papers
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School
Missouri State University, Springfield *
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Course
QBA-237
Subject
Industrial Engineering
Date
Dec 6, 2023
Type
doc
Pages
7
Uploaded by DrMusic11842
Quiz 4
Question 1
1.
In a random sample of UTC students, 50% indicated they are business
majors, 40% engineering majors, and 10% other majors. Of the business
majors, 60% were females, whereas 30% of engineering majors were
females. Finally, 20% of the other majors were female. What percentage of
students in this sample was female? (format must use % sign)
44%
0.33 points
Question 2
1.
In the two upcoming basketball games, the probability that UTC will defeat
Marshall is 0.63, and the probability that UTC will defeat Furman is 0.55. The
probability that UTC will defeat both opponents is 0.3465. What is the
probability that UTC will defeat Furman given that they defeat Marshall? (2
Decimal format = 0.00)
0.63
0.33 points
Question 3
1.
In a random sample of UTC students, 50% indicated they are business
majors, 40% engineering majors, and 10% other majors. Of the business
majors, 60% were females, whereas 30% of engineering majors were
females. Finally, 20% of the other majors were female. Given that a person is
female, what is the probability that she is an engineering major? (4 Decimal
format = 0.0000)
.2727
0.33 points
Question 4
1.
In the two upcoming basketball games, the probability that UTC will defeat
Marshall is 0.63, and the probability that UTC will defeat Furman is 0.55. The
probability that UTC will defeat both opponents is 0.3465. What is the
probability that UTC will win at least one of the games? (4 Decimal format =
0.0000)
.8335
0.38 points
Page 1 of 5
Quiz 4
Question 5
1.
If A and B are independent events with P(A) = 0.2 and P(B) = 0.6, then P(A or
B) =
1.
.2 + .6 – p(A*B)
2.
.2+.6-.12
3.
.68
0.6
2
0.1
2
0.6
0
0.
6
8
0.33 points
Question 6
1.
What is the probability of selecting an individual who is majoring in
Management, given that the person is female? (2 decimal format = 0.00)
.25
0.33 points
Question 7
1.
What is the probability of selecting a male individual? (2 Decimal format =
0.00)
Page 2 of 5
Quiz 4
.40
0.33 points
Page 3 of 5
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Quiz 4
Question 8
1.
Given that a person is male, what is the probability that he is majoring in
Management? (2 Decimal format = 0.00)
0.50
0.33 points
Question 9
1.
A survey of a sample of business students resulted in the following
information regarding the genders of the individuals and their selected major.
What is the probability of selecting an individual who is majoring in
Marketing? (2 Decimal format = 0.00)
0.15
0.33 points
Page 4 of 5
Quiz 4
Question 10
1.
Each customer entering a department store will either buy or not buy some
merchandise. An experiment consists of following 3 customers and
determining whether or not they purchase any merchandise. The number of
sample points in this experiment is
1.
2x2x2 (either yes or no, either yes or no, either yes or no)
2
4
6
8
0.33 points
Question 11
1.
The probability of the union of two events with nonzero probabilities
cannot be less than one
cannot be one
cannot be less than one and
cannot be one
None of the other answers is
correct
0.33 points
Question 12
1.
If P(A) = 0.38, P(B) = 0.83, and P(A and B) = 0.57; then P(A or B) =
1.2
1
0.
6
4
0.7
8
1.7
8
0.33 points
Page 5 of 5
Quiz 4
Question 13
1.
If A and B are independent events with P(A) = 0.38 and P(B) = 0.55, then P(A|
B) =
0.209
0.000
0.550
None of the other answers is
correct. (.38)
0.33 points
Question 14
1.
The probability of the occurrence of event A in an experiment is 1/3. If the
experiment is performed 2 times and event A did not occur, then on the third
trial event A
must occur
may occur
could not occur
has a 2/3 probability of
occurring
0.33 points
Question 15
1.
Initial estimates of the probabilities of events are known as
sets
posterior
probabilities
conditional
probabilities
prior probabilities
0.33 points
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Quiz 4
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