Assignments ECO 533
- Assignment 1
Chapter 1 Assignment 1 - Due by midnight 7/15
1. Install Minitab and Excel on your computer.
2. Read Chapters 1, 2 and 3
3. You have been assigned a company to forecast sales revenues for the next two
years. You will nee
Scott Sexton
Mana 4322
Professor DeLeon
6-2-14
AQ 1.4
Walmart- "We save people money, so they can live better." I do not believe this
mission statement is useful in motivating employees. As far as this mission
statement for providing strategic direction g
Connexions module: m16012
1
Sampling and Data: Frequency,
Relative Frequency, and
Cumulative Frequency
Susan Dean
Barbara Illowsky, Ph.D.
This work is produced by The Connexions Project and licensed under the
Creative Commons Attribution License
Abstract
BA 578 Assignment-Sol- due by Midnight (11:59pm) Sunday, June 9th ,
2013(Chapters 1, 2 and 3): Total 125 points
True/False (Two points each)
Chapter 1
1. An example of a quantitative variable is the telephone number of an individual. FALSE
2. If we examin
Standard Normal Curve Probability Distribution
The table is based on the upper right 1/2 of the Normal Distribution; total area shown is .5
The Z-score values are represented by the column value + row value, up to two decimal places
The probabilities up t
Notes for Exam
Data from doc sharing that will be on exam
Time Series Plot: Has Cycle, Trend, Seasonality
Time Series Plot of Sales Rev.
1000
Sales Rev.
800
600
400
200
0
1
8
16
24
32
40
48
56
64
72
Index
Removed Seasonal differenced Date
Ran Autocorrelat
1. Given the following set of cash flows:
Period
Cash Flow
1
$30,000
2
$25,000
3
$20,000
4
$15,000
5
$10,000
a. If the required rate of return is 8% per year, what is the present value of the above cash
flows? Future value?
b. Now, suppose that you are of
CHAPTER 10
One-Sample Tests of Hypotheses
SOLVED PROBLEMS
Texas A&M - Commerce
Problem 10-1
1.
H
H
0
1
: 50
: 50
2.
.05
3.
Test Statistic X , based on Z
4.
Decision Rule : Fail to reject
H
0
falls between 1.96 and 1.96 or FTR
H
5.
6.
7.
0
if 1.96 Z .96
1
CHAPTER 11
Two-Sample Tests of Hypothesis
SOLVED PROBLEMS
1.
H :
H :
0
1
Problem 11-3
1
1
2
2.
.05 (one tail)
3.
TestStatistic x1 x 2 Z
4.
Decision Rule : FTR
5.
z
x1 x 2
2
n
1
2
n
0
if z 1.645
7.6 8.1
2.3 2.9
2
40
Decision: Fail to reject H0
1
6
2
H
2
Chapter 9
Estimation and Confidence
Intervals
Solved Problems
Problem 9-1
CI x z
n
10
55 2.58
49
51.314 58.686
Problem 9-2
CI x z
n
5
40 1.96
81
38.911 41.089
Problem 9-3
a.
b.
c.
x
5
1.581
n
10
The population is normally distributed
and the popu
Chapter 6
Discrete Probability
Distributions
Solved Problems
Problem 6-1
x
P(x)
xP(x)
0
.20
0
1
.40
.40
2
.30
.60
3
.10
.30
= xP( x ) 1.30
Problem 6-1 (Cont.)
x
x
-1.30
1.69
.338
- .30
.09
.036
.70
.49
.147
1 .70
2.89
.289
2
x 2 p x
2 x 2 p x .81
.8
Chapter 7
Continuous Probability
Distributions
Solved Problems
Problem 7-4
a b 400 3800
a.
2100
2
2
b.
b - a
12
2
3800 400
12
2
981.50
1
c. P(x 2000)
(2000 400) .4706
(3800 - 400)
1
d. P(x 3000)
(3800 3000) .2353
(3800 400)
Problem 7-9
a. 490 and 510
Chapter 5
Survey of Probability Concepts
SOLVED PROBLEMS
Problem 5-1
Outcome 1 2
1
A A
2
A F
3
F A
4
F F
Problem 5-3, 4
3.
Accounting 10
Finance
5
Economics
3
Management 6
Marketing
10
Total
34
a. P(Mgt) =
6
.176
34
b. Empirical
4.
a P(minority) =
b. clas
Chapter 4
Describing Data :
Displaying and Exploring Data
Solved Problems
Problem 4-5
a. 621 to 629
b. 5
c. 621,623,623,627,629
Problem 4-10
Stem
Leaves
3
6
4
7
5
22499
6
0113458
7
035678
8
0344447
9
055
The daily usage ranged from 36 to 95. In a typic
Chapter 3
Describing Data :
Numerical Measures
Solved Problems
Problem 3-3
a.
Problem 3-3
b.
x x
5 7 9 7 4 7 10 7
2 2 3 3
0
Problem 3-10
1. X
13
13
12
15
7
15
5
12
6
7
12
10
9
13
12
161
x =
161 .73overtime hours
a. X X
10
n
15
b. X is a sample stati
Chapter 1
What is Statistics?
Solved Problems.
Problem 1
a. Interval
b. Ratio
c. Nominal
d. Ordinal
e. Ratio
Problems # 5,6,7
5.Qualitative data is not numerical, whereas
quantitative data is numerical.
6.A population is the entire group which you are
stu
Chap 8
6, 15, 16, 17, 18, 33, 34, 35
The Central Limit Theorem (CLT) is "central" to sampling theory. You know that sampling saves time, money, and product
where destruction is involved. But what would this matter if we did not have a high degree of confi
Chap 11
3, 4, 5, 6, 8 , 11, 12, 13, 14, 15, 16, 19, 25, 28, 32, 33, additional problem 1, 2
In the previous chapter we tested a single sample against a known population parameter basically to see if our sample
could be a member of that population. . In th
Chap 5
Deals with probability. Probability can be defined simply by Probability of an Event P(Event) = Number of
ways the event can occur/total outcomes. There are three types of probability - classical, relative frequency (or
empirical), and subjective (
Chap1
Statistics can be categorized into two major classifications - descriptive statistics and inferential statistics. You are
familiar with descriptive statistics in your every day life. Whenever you see a graph, a pie chart, a trend line, a budget
list
BA 302 Chap 13
To be turned in by May 3rd: Problem 13-4 page 471 and added problems. Solve the problem first
manually and then by excel. In addition to solving for r and r squared manually, test the model for
statistical significance, find the regression
Chapter 13
2) Coefficient of determination-.79
X is approx. 80 percent of the variation of Y.
4) a. Y being units and X being the assemblers
b. The production is effected by the assemblers. The higher and lower amount of
assemblers, the more different pro
Chapter 9
2) 38.9
6) a. 18,775, $21,225
b. As sample size increases, the error decreases.
10) a. 2.145
b. 2.5
c. 1.796
16) a. .75
b. 0.694 to 0.806
c. population portion is between 70 to 80 percent.
24) 60
Chapter 10
6) a. greater than equal to 3
b. less
Homework Week 3
Chapter 6
2) Compute the mean and variance.
Mean = 5.4
Variance = 12.04
10) In a binomial distribution where n=5 and pie = .40, determine the probabities:
a. x=1, P(1)=5!/1!(5-1)! * (.4)(.6)5-2=0.2592
b. x=2, P(2)=5!/2!(5-2)! * (.4)2(.6)5-
Chapter 5
6) A. List the chances of this experiment if there is particular concern about gender equity.
Outcome
1st
2nd
1
M
M
2
M
F
3
F
F
4
F
M
B. Which concept of probability would you use to estimate these probabilities? Classical
14) A. Use an addition
Week 1 Homework Brandie Dupuis
Chapter 1
2) A. The number of papers sold each Sunday during 2011. RATIO
B. The departments, such as editorial, advertising, sports, etc. NOMINAL
C. A summary of the number of papers sold by county. RATIO
D. The number of ye
AP Statistics Test Chapter 5 ANSWERS
1. Suppose there are 500 students in your school.
a) What are the two requirements for a Simple Random Sample (SRS)
1. Each individual must have an equal chance of being chosen
2. Each group of n individuals must have
Stats Homework 2014
True / False Questions
1. A population is a subset of measurements taken from a large group.
FALSE
2. Those elements that are not in Set A are called the complement of A.
TRUE
3. The probability of event A is defined as the number of w