/ BA 240 W. Li Exam 2
Fall 2009
BA 240
Statistical Analysis
Winnie Li
Exam 2
November 6, 2009
I acknowledge and accept the Honor Code
(Signed): I -_ 3
Score: /100
Instructions:
0 Do NOT Open the exam until instructed to do so.
0 You will have
BA 240
W. Li
Answer Sheet
Quiz 1
Problem 1: A high school guidance counselor would like to estimate the annual tuition costs (in U.S. dollars) of community colleges in the United States. He first randomly chose 100 community colleges throughout the United
BA 240
W. Li
Answer Sheet
QUIZ 2
Show your work clearly and completely. Keep THREE digits after decimal point. Problem 1: Consider following sample of 10 quantitative measurements: 32 28 28 16 38 31 30 23 27
19
a) Calculate the Measures of Central Tendenc
BA 240
W. Li
Answer Sheet
QUIZ 6 Solution
Show your work Completely
Round to the THIRD decimal place.
Interpret your results!
Problem 1:
Suppose the average annual expense for a random sample of 14 stock funds is normally
distributed with mean of 1.63 per
BA 240
W. Li
Answer Sheet
QUIZ 2 Solution
Show your work clearly and completely.
Round to the THIRD decimal place.
Problem 1:
Consider following sample of 10 quantitative measurements:
36
28
28
17
39
31
30
23
27
19
a) Calculate the Measures of Central Ten
BA 240 W. Li Exam 2
Winter 2010
BA 240 *5
Statistical Analysis
Winnie Li
Exam 2
February 24, 2010
Name: Yw LZNG CHEM
I acknowledge and accept the Honor Code
(Signed): / W
Score: 8 r /100
Instructions:
0 Do NOT Open the exam until in
BA 240
W. Li
Quiz 1 Answer
Quiz 1 Answer
Problem 1:
A group of researchers would like to see whether a massage enables the muscles of
tired athletes to recover from exertion faster than usual. They recruited eight amateur
boxers to participate in an exper
Winter 2007 BA 240 Due on Tuesday, 01/09/07
W. Li
01/02/2007 Name:_
QUIZ 1
Problem 1: A high school guidance counselor would like to estimate the annual tuition costs (in U.S. dollars) of community colleges in the United States. He analyzed the da
Spring 2007 BA 240
W. Li
Homework 3 Solution
Homework 3 Solution
Problem 3.31:
Problem 3.42:
1
Spring 2007 BA 240
W. Li
Homework 3 Solution
Problem 3.49:
2
Spring 2007 BA 240
W. Li
Homework 3 Solution
Problem 3.52: a) b) c) d) e) P(White) = 84/368 = .228
BA 240
W. Li
Answer Sheet
QUIZ 3
Show your work clearly and completely. Problem 1: In a survey of 100 workers in ABC Inc., 70% are Male (MALE) and 10% hold MBA degrees (MBA). In addition, among those who have MBA degrees, 60% of them are Male. Construct a
BA 240
W. Li
Homework 7 Solution
Homework 7 Solution
Problem 8.30:
Problem 8.32:
1
BA 240
W. Li
Homework 7 Solution
Problem 8.33
2
BA 240
W. Li
Homework 7 Solution
Problem 8.50:
Problem 8.52:
3
BA 240
W. Li
Homework 7 Solution
4
BA 240
W. Li
Homework 5 Solution
Homework 5 Solution
Problem 5.31:
1
BA 240 Problem 5.38:
W. Li
Homework 5 Solution
Problem 5.112
2
BA 240 Problem 6.38:
W. Li
Homework 5 Solution
3
BA 240 Problem 6.39:
W. Li
Homework 5 Solution
4
BA 240
W. Li
Homework 9 Solution
Homework 9 Solution
Problem 9.10:
1
BA 240 Problem 9.13:
W. Li
Homework 9 Solution
2
BA 240 Problem 9.15:
W. Li
Homework 9 Solution
3
BA 240 Problem 9.14
W. Li
Homework 9 Solution
Problem 9.18:
4
BA 240
W. Li
Homework 1 Solution
Homework 1 Solution
Problem 1.15: a) The population of interest is all citizens of the United States. b) The variable of interest is the view of each citizen as to whether the United States was justified in invading Iraq i
BA 240
W. Li
02/16/06
Practice Exam 2
Problem 1: Suppose that the number of sick days an employee at XYZ Company takes
per year is normally distributed with mean 9 days and standard deviation of
2.5 days.
a) What proportion of the employees are out fewer
BA 240
W. Li
Homework 8 Solution
Homework 8 Solution
Problem 8.62:
Problem 8.64:
1
BA 240 Problem 8.130
W. Li
Homework 8 Solution
2
BA 240 Problem 8.135:
W. Li
Homework 8 Solution
Problem 8.145:
3
BA 240 Statistical
Analysis
Chapter 1 and 2
Winnie Li
October 16, 2015
BA 240 - Winnie Li
1
Chapter 1: Statistics,
Data, and Statistical
Thinking
The Science of Statistics
Fundamental Elements of Statistics
Types of Data
Collecting Data
October 16, 2015
B
BA 240
W. Li
Score: _ of 20
QUIZ 5
Show your work CLEARLY and COMPLETELY!
Name:_
For z-scores: Round to the SECOND decimal place.
For Probabilities: Keep the Original FOUR decimal places.
Draw the Normal Curves and highlight the corresponding areas!
Probl
Winter 2007 BA 240
W. Li
01/08/2007
QUIZ 2
Show your work clearly and completely. Keep at least THREE digits after decimal point. Due on Thursday, January 11. Problem 1: Name:_
Consider following sample of 10 quantitative measurements: 36 28 28 1
BA 240 Statistical
Analysis
Chapter 7
Winnie Li
October 16, 2015
BA 240 - Winnie Li
1
Chapter 7: Confidence
Intervals
Point Estimators
Estimation of a Population Mean
Normal (z) Statistic
Students t Statistic
Estimation of a Population Proportion
Estimati
BA 240 Winter 2007 Due on Thursday, January 25. Problem 1:
W. Li
01/18/2007 Name:_
QUIZ 3
In a survey of 100 students, 40% are Male students (MALE), 40% of all are in Business Major Students (BUSINESE), and 40% of Male students are in Business Maj
Business Administration - Transfer
BA 240 Statistical Analysis
Winnie Li
Winter 2013 Course Syllabus
Time and Place
Section: 5514 HYB
Time: M/W 1:00pm 2:50pm
Room: C-208
Contact and Office
Hours
Telephone: 425-564-2825
Email: winnie.li@bellevuecollege.edu
Lisa Burnham
BSAD 2100 Principles of Management
September 23, 2013
CASE STUDY 4
1.
Who would Timberland identify as its stakeholders? Does its stakeholder map contain
stakeholders that arent on the maps of other apparel companies?
Employees, Customers, St
BA 240
W, Li
Answer Sheet
QUIZ 4
Show your work CLEARLY and COMPLETELY! Round to the THIRD Decimal Place. Problem 1: Suppose that the probability distribution of a random variable x can be described by the x formula p( x) for each of the values x =1, 2, 3
BA 240 Spring 2008
W. Li
06/03/2008
QUIZ 8 Solution
Problem 1: A Florida real estate appraisal company regularly employs a paired sales technique to evaluate land sales. When two parcels of land are sold, the ratio of the acreage of the larger parcel to t
BA240StatisticalAnalysis
Chapter 9
Winnie Li
November 23, 2013
BA 240 - Winnie Li
1
Chapter9:TwoSamplesCIand
HypothesisTesting
Comparing Two Population Means: Large,
Independent Samples
Comparing Two Population Means: Small,
Independent Samples
Comparing
BA240StatisticalAnalysis
Chapter 4
Winnie Li
November 23, 2013
BA 240 - Winnie Li
1
Chapter4:DiscreteProbability
Distribution
Random Variables
Probability Models for Discrete Random Variables
Binomial Probability Distribution
November 23, 2013
BA 240 - Wi
BA 240
Show your work Completely Round to the THIRD decimal place. Interpret your results!
W. Li
Answer Sheet
QUIZ 6 Solution
Problem 1:
Suppose the average annual expense for a random sample of 12 stock funds is normally distributed with mean of 1.63 per
BA 240
W. Li
Answer Sheet
QUIZ 5 Solution
Show your work CLEARLY and COMPLETELY!
Draw the Normal Curves, highlight the corresponding areas!
Round to SECOND Digits after Decimal Point for Z-scores
Keep the Original FOUR Digits after Decimal Point for Proba
BA 240
W. Li
Assignment 2 Solution
of A
AssignmentDotplot
2 Solution
Problem 2.36:
a) The dot plot for the nine measurements is:
-6.0
-5.7
-5.4
-5.1
-4.8
-4.5
-4.2
A
b) The Stem-And- Leaf plot of the nine measurements is:
Stem Leaf
Unit=1
Unit=0.1
-6 0
-5
BA 240
W. Li
Assignment 1 Solution
Assignment 1 Solution
Problem 1.16:
a) The population of interest is all the students in the class. The variable of interest is
the GPA of a student in the class.
b) Since GPA is measured on a numerical scale. It is quan