GSB 420
Homework Week 8
Hypothesis Test Example
Use Minitab to answer the questions. Make sure to copy all output from the minitab:
1. Followings Tables shows previous 11 months stock market returns.
Date
12/7/2007
1/8/2008
2/8/2008
3/8/2008
4/8/2008
5/8/
Answers to Homework Problems in
Chapter 14. Multiple Regression Analysis
This homework has 22 problems, worth a total of 25 points.
1.
c.*
more than one; one
2.
a.*
autocorrelation or serial correlation
Autocorrelation is a special case of serial correlat
Answers to Homework Problems in
Chapter 13. Simple Regression Analysis
This homework has 23 problems, worth a total of 25 points.
1.
e.*
only (b) and (c) of the above
2.
a.*
one; one
3.
b.*
intercept; slope coefficient
4.
d.*
the sum of errors squared
5.
Answers to Homework Problems in
Chapter 11. One-Sample Hypothesis
Testing
This homework has 50 problems, worth a total of 50 points.
1. c.*
2. a.* an equality sign
3. a.* no equality sign
4. a.* original; H0or Ho
5. b.* null;alternative
6. d.* H0:=0;
7. b
Answers to Homework Problems in
Chapter 10. Confidence Interval
Estimation
This homework has 17 problems, worth a total of 20 points.
1. c.*
2. b.*
3. a.*
4. a.*
5. b.*
6. c.*
7. a.*
8. e.*
to capture the population mean with a certain probability. mean;
GSB 420 . Prof. Jin Choi
Homework #2 on Partial Differentiation, Optimization & Elasticity
Student's Name: Team ( n ViSWiVQitqqu
The total points for this HW are 30.
Part 1. Partial Differentiation (Each question is worth 3 points)
Given Y=4X2W2XW +3Z2+XW
Integrated Strategy Analysis for Competing Globally
(Company Name)
GSB 599 Strategic Analysis for Competing Globally
Winter 2017
Dr. Mark L. Frigo
Ledger & Quill Distinguished Professor of Strategy and Leadership
Director Center for Strategy Execution and
Answers to Homework Problems in
Mathematics Chapter 4. Calculus Applications to
Economics
This homework has a total of 25 points.
A.
Calculation of Demand Elasticity
1.
d.*
260,000
When P = 2,000
Q = 300,000 20*(2,000) = 260,000
2.
a.*
Q1 = 220,000; and Q
Answers to Homework Problems in
Mathematics Chapter 1. Algebra Review
This homework has a total of 25 points. Please treat all mathematically correct
expressions as correct answers, unless instructed otherwise.
Expand the following equations:
1.
b.*
12X2
Answers to Homework Problems in
Chapter 8. The t-Probability Distribution
This homework has 8 problems, worth a total of 10 points.
1.
d.*
none of the above
2.
d.*
all of the above
3.
a.*
19
4.
c.*
almost equal to
5.
b.*
0; 1
6.
b.*
-2
t=
7.
c.*
4 10 6
=
Answers to Homework Problems in
Mathematics Chapter 3. Optimization Techniques
This homework has a total of 20 points.
A.
Find the value of X that optimizes the following functions.
1.
a.*
X=1; Minimum; Y=18
FOC: Y ' = 4 X 4 = 0 X = 1
SOC: Y " = 4 > 0
The
Answers to Homework Problems in
Chapter 5. Basic Probability Theory
This homework has 22 problems, worth a total of 25 points.
1.
a.*
outcome; sample space
2.
b.*
empirical
3.
c.*
0<p<1
4.
c.*
must be equal to 1.
5.
b.*
all events that are not part of X.
Answers to Homework Problems in
Chapter 9. Sampling Distributions
This homework has 13 problems, worth a total of 15 points.
1.
d.*
X
2.
b.*
smaller than
3.
b.*
the standard error of the population mean
4.
c.*
0.1587
n
P( X < 45) = P( Z <
45 50
) = P( Z <
Answers to Homework Problems in
Mathematics Chapter 2. Calculus Review
This homework has a total of 20 points.
In differentiating the following functions with respect to X, select all mathematically
correct expressions as answers.
1.
a.*
Y' = 2
dY
= Y = 1
Answers to Homework Problems in
Chapter 7. The Normal Probability Distribution
This homework has 13 problems, worth a total of 15 points.
1.
b.*
the number of flight arrivals per day; height
2.
d.*
all of the above
3.
a.*
the mean
A normal distribution is
GSB 420 Applied Quantitative Analysis
Fall 2016
Dr. Bala Batavia
Office Hours:
Monday and Tuesday: 500-530pm
and by appointment
DPC6219, 312-362-5766
Required Textbook.
Jin W. Choi, Step-by-Step Business Math and Statistics, 3rd edition, 2011.
University
Answers to Homework Problems in
Chapter 6. Discrete Probability Distributions
This homework has 16 problems, worth a total of 20 points.
1.
d.*
only (a) and (b) of the above
2.
b.*
$1.9 million
E(Sales) = $1 x (3/10) + $2 x (5/10) + $3 x (2/10) = $1.9 mil
GSB420 CLASS 7 STATISTICS (CH 9 - 12)
Chapter 9.
Page 1 of 15
Sampling Distribution
The Central Limit Theorem (CLT)
Population Mean=
Sample Mean
Sample Mean
X1
Sample Mean
X4
X2
Sample Mean
X3
Sample Mean
Sample Mean
X5
X6
Sample Mean
X7
GSB420 CLASS 7 ST
GSB420 CLASS 8 STATISTICS (CH13)
CLASS 8 Chapters 13. Simple Regression Analysis
Page 1 of 14
GSB420 CLASS 8 STATISTICS (CH13)
Page 2 of 14
Example 1) Consumption and Income
income consumption
10000
25000
35000
32000
30000
27000
25000
31000
70000
59000
65
GSB420 CLASS 10 STATISTICS (CH 13, 14)
Page 1 of 11
Class 9 Regression Analysis II
Review of Simple Regression Model
The Crude Oil price was highly fluctuated in 2006 and 2007 due to ongoing conflicts in Middle East,
OPEC conflicts, and historically highe
GSB420 CLASS 4 STATISTICS (CH1-3)
Page 1 of 22
Class4, Introduction to Business Statistics (Ch 1-3)
Population vs. sample
Population = the entire members of ones interest
These entire members of ones interest can be either finite (thus, known) or infinit
GSB420 CLASS 10 STATISTICS (CH 13, 14)
Chapter 14: Multiple Regression Model
Page 1 of 9
GSB420 CLASS 10 STATISTICS (CH 13, 14)
Page 2 of 9
Multivariate (Multiple) Regression Models
A Regression model with k independent variables
Yi 0 1 X 1i 2 X 2i . k X
GSB420 CLASS 7 STATISTICS (CH 9 - 12)
Chapter 9.
Page 1 of 15
Sampling Distribution
The Central Limit Theorem (CLT)
Population Mean=
Sample Mean
Sample Mean
X1
Sample Mean
X4
X2
Sample Mean
X3
Sample Mean
Sample Mean
X5
X6
Sample Mean
X7
GSB420 CLASS 7 ST
GSB420 CLASS 2 Math (CH3)
Page 1 of 12
Math Chapter 3. Optimization
Linear Equation
Nonlinear Equation
GSB420 CLASS 2 Math (CH3)
Page 2 of 12
First and Second Order Conditions
Y = X2
Graph from desmos.com
Y = -X2
Y = -X2
GSB420 CLASS 2 Math (CH3)
Page 3 o
GSB420 CLASS 5 STATISTICS (CH4-6)
Page 1 of 22
Chapter 4. Statistical Descriptive Measures
A.
B.
Measures of Central Tendency (1st Moment)
1.
The Mean = The Expected Value = The Average
2.
The Median = the mid-point value
3.
The Mode = the most frequently
Page 1 of 9
GSB420 CLASS 6 STATISTICS (CH7-8)
Chapter 7.
A.
The Normal Probability Distribution
The Characteristics or properties of the Normal Distribution
X
As shown in the above graph of a normal distribution, we can observe its characteristics as
foll