ECO
578 #1
Assignment
Instruction
Excel is not allowed
All work must be shown step by step to receive full credit
Due date
Submit in the class on Wednesday September 21, 2016
1. Use problem 4 on page 2-32 to answer the following questions.
a) Mean X
ECO 578 Summer II 2016
Page 1 of 14
Name: _
ID: _
There are 4 parts:
Part A: Work Problem (1-18) *All of part A work must be shown step by step*
Part B: True/ False (19-38)
Part C: Answer the following questions (39-45)
Part D: Select the correct answer
Assignment-4(Chapters 14 & 15 of 7thed.)
Due by Midnight of Tuesday, May 10th, 2016: Total 75 points
True/False (1point each)
Chapter 13
1. The standard error of the estimate (standard error) is the estimated standard deviation of the
distribution of the
Eco 578 -01E Spring 2016: Final Test: Wednesday May 11th 5 pm midnight
Total 400 points
T/F (6 points each)
Question 1. The chi-square distribution is a continuous probability distribution that is skewed to
the left. (Ch13) - false
Question 2. In performi
BA 578 Assignment-Sol- due by Midnight (11:59pm) Monday, July 25th, 2016
(Chapters 1, 2, 3, 4, 5, 6, and 7): Total 250 points
True/False (Two points each)
Chapter 1
1. An example of an Ordinal scale variable is the make of a car. FALSE It is Nominal scale
Page 1 of 6
Grading Summary
These are the automatically computed results
of your exam. Grades for essay questions,
and comments from your instructor, are in
the "Details" section below.
Date Taken:
Time Spent:
Points Received:
8/29/2012
41 min , 10 secs
2
Dr. Arizes Classnotes
Chapter 9
Page 9-17
Question 3: Consider the following hypothesis test.
H0: = 25
Ha: < 25
A sample of 100 is used and the population standard deviation is 12. Use = 0.05.
Provide the value of the test statistic z and your conclusion
Dr. Arizes Classnotes
Chapter 6
Page 6-13
Question 1: Solve the following problems using the Binomial Tables.
a) n = 5, p = 0.20,
P(X = 4) = P(X 4) P(X 3)
= 0.9997 0.9933
= 0.0064
b) n = 10, p = 0.7 using Q Method because p is more than 0.5
P(X = 3)
Step
How to add Data Analysis on Microsoft Excel 2007
1. Click on office button
2. Select Excel options
3. Go to Add-Ins, select Analysis Tool
4. Check in the box in front of Analysis ToolPak
5. Finally, after completely add in Data Analysis tool, you will
see
Dr. Arizes Classnotes
Chapter 5
Page 5-13
Question 6: a) Given the information in Problem 5, find P( A B ).
a) P( A B ) = 0.42
A
A
0.32 0.18 0.5
0.08 0.42 0.5
0.4 0.6
1
B
B
b) Let P(A) = 0.7, P(B) = 0.3, and P(A and B) = 0.2.
Find the following probabilit
ECO 578
Name:_
CWID:_
Homework #1
Instruction
Use of Excel is not allowed
All work must be shown step by step to receive full credit
You may submit your answer sheet by either of the two ways
Use Pen/pencil to write on PDF and Scan your answer sheet o
Chapter 8
Page 8-11
Question 11: A random sample of size n = 64 is drawn from a population with mean and
standard deviation . The mean and standard deviation of the sample are X = 308.9 and S = 31.9.
a. Find a 90% confidence interval for the mean . Interp
Chapter10
6. In an experiment involving matched pairs, a sample of 14 pairs of observations is collected.
The degree of freedom for the t statistic is 12. FALSE
7. In testing the difference between two means from two independent populations, the sample
si
Chapter 13
11. The chi-square distribution is a continuous probability distribution that is skewed to the left.
FALSE
12. In a contingency table, when all the expected frequencies equal the observed frequencies
the calculated 2 statistic equals 1. FALSE
1
Chapter 9
1. The average waiting time per customer at a fast food restaurant has been 7.5 minutes. The
customer waiting time has a normal distribution. The manager claims that the use of a new
cashier system will decrease the average customer waiting time
Chapter 10
4. At = 0.05 and 0.10, test the hypothesis that the proportion of Consumer (CON) industry
companies winter quarter profit growth is more than 1 percentage point greater than the
proportion of Banking (BKG) companies winter quarter profit growth
Dr. Arizes Classnotes
1
Page 3-6
Example 3:
Number
of year
Cumulative
frequency
Frequency
Relative
frequency
0-9
8
8
0.1143
10-19
21
13
0.1857
20-29
36
15
0.2143
30-39
57
21
0.3
40-49
67
10
0.1429
50-59
70
3
0.0429
70
1.0000
Total
Page 3-7
Question 1: The
Dr. Arizes Classnotes
1
Chapter 10
Page 10-23
Question 1: For n = 6 data points, the following quantities have been calculated:
xy
X
b1
b0
x
n
x
400
y
40
x
76
40
= 6.667,
6
Y
2
346
y
n
y
2
1160
76
= 12.667
6
xy x y 6400 4076
=
= -1.3445
6346 40
192 Statistical Inference ll: Hypothesis Testing
7.1 INTRODUCTION it
There are two types of statistical inference~estimationg whiphnwas cover-pd in ,
Chapter 6, and hypothesis testing, which is the subjectof this "chapter.g f i
r geThe purpose of hypoth