Part 1 of 1 Question 1 of 28
4.0 Points
Pretend you are in charge of a packaging equipment company that is filling
boxes of cereal. From past experience we know the populations mean weight of
the filled boxes is 300 grams (and we know the distribution of
Test 4 Ch. 13 and 14 and 16
Table of Contents
Part 1 of 1 Question 1 of 34
3.0 Points
If sales is the variable you are trying to explain and you have 2 independent
variables of color and price. The color coefficient is 5, and the price coefficient is
20
Question 1 of 15
7.0 Points
True or False: SST = SSA + SSW
A. True
B. False
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Question 2 of 15
7.0 Points
SST is equal to _.
A. SSA + SSW
B. SSA  SSW
C. The sum of squared differences among groups
D. A and C are correct
E. B and C are corre
Ch. 3 and Ch. 6 Quiz
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Part 1 of 1 
100.0 Points
Question 1 of 5
20.0 Points
If your data set is 4, 5, 5, 5, and 9, your mean would be 5.6.
True
False
Answer Key: True
Question 2 of 5
20.0 Points
Your sample is (1,700, 1,898, 1,90
Question 1 of 34
3.0 Points
If sales is the variable you are trying to explain and you have 2 independent variables
of color and price. The color coefficient is 5, and the price coefficient is 20. You have
an intercept coefficient of 500 and an rsquare
Ch. 7 and Ch. 8 Quiz
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Part 1 of 1 
100.0 Points
Question 1 of 20
5.0 Points
When subpopulations vary considerably, it is advantageous to utilize stratified
sampling to ensure that each subpopulation gets some representation and
Question 1 of 28
4.0 Points
Pretend you are in charge of a packaging equipment company that is filling boxes
of cereal. From past experience we know the populations mean weight of the filled
boxes is 300 grams (and we know the distribution of grams is app
OPRE 202: Statistical Data Analysis
Fall 2015  Merrick School of Business  University of Baltimore
Instructor: Jehanzeb Cheema, Ph.D.
Term Project (Maximum points: 50)  Due date: Sunday, December 6, 2015 (11:55 PM)
Notes
Please double check answers bef
Ch. 1 Introductory Quiz
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Part 1 of 1 
100.0 Points
Question 1 of 5
20.0 Points
The population is _.
A. part of
the sample
B. a
hypothesis
test
C. the
pareto
optimality
principle
D. always
exactly a
normal
distribution
E. None of
10.0 Points
Question 1 of 12
When comparing two population means with an unknown standard deviation you use a
t test and you use n1 degrees of freedom.
A. True
B. False
10.0 Points
Question 2 of 12
Pretend you want to determine whether the mean weekly sa
Part1of1
Data were collected on the hourly wage ($) for two types of marketing managers: (1) advertising / promotion managers and (2) sales managers.
The results were used to create the following histograms. Which of the following statements is true?
I. T
OPER 202003Statistical Data Analysis
Homework #10
Due: 11:55 pm on Friday, November 21, 2014
Reading:
Chapter 15 of textbook
Question
1) (same as Problem 15.1 All parts)
The following is the quadratic regression equation for a sample of n = 25:
Yi = 5
OPER 202003Statistical Data Analysis
Homework #4
Due: 11:55 pm on Friday, September 26, 2014
Reading:
1) Chapter 9 of textbook
HW Problem (same as Problem 9.24 part a. on page 322)
You are the manager of a restaurant for a fastfood franchise. Last mont
OPRE 202: Statistical Data Analysis
Fall 2015  Merrick School of Business  University of Baltimore
Instructor: Jehanzeb Cheema, Ph.D.
Midterm exam (Maximum points: 50)  Due date: Sunday, October 25, 2015 (11:55 PM)
Notes and Instructions
Please double
OPRE 202: Statistical Data Analysis
Fall 2015  Merrick School of Business  University of Baltimore
Instructor: Jehanzeb Cheema, Ph.D.
Final Exam (Maximum points: 50)  Due date: Tuesday, December 15, 2015 (11:55 PM)
Notes
Please double check answers bef
Suppose a random variable x is best described by a normal distribution with = 60 and
Find the z
score that corresponds to the value x = 72.
A. 12
B. 72
C. 5
D. 1
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Question 2 of 10
1.0 Points
The price of a gallon of milk follows a normal d
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OPRE202 HW 2.
Problem 1. Given the normal distribution with mean = 100 and standard deviation =10.
a. Whats the probability of X >75?
_ Use the transformation formula to find Z =>Z= 75100/10= 2.5.
Check the normal distribution table to fin
OPER 202003Statistical Data Analysis
Homework #9
Due: 11:55 pm on Friday, November 14, 2014
Reading:
Chapter 14 of textbook
Question
1) (same as Problem 14.9 All parts)
The following ANOVA summary table is for a multiple regression model with two
indep
ChiSquare Tests
Presentation,stats,MichaelJ.Clark
Chapter12b
New Symbols + Important Info
Chisquared2
fo=observedfrequency(inaparticularcell)
fe=expectedfrequency(inaparticularcellifH0istrue)
Thepopulationproportion1
Critical value for your chisquare te
Hypothesis Testing
Presentation,stats,MichaelJ.Clark
Chapter9
The Hypothesis
Ahypothesisisaclaim(assumption)abouta
populationparameter:
populationmean
Example: The mean monthly cell phone bill of this
city is = $52
The Null Hypothesis, H0
Statestheassump
Question 1 of 10
10.0 Points
When using a oneway ANOVA F test, the null hypothesis is all groups population
means are the same, and the alternative hypothesis is all groups population
means are not the same.
A. True
B. False
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Question 2 of