OMIS 353 Statistical Methods
Extra problem sets for Two Population with answers
1. Suppose that the starting salaries of male math professors are normally distributed with a
mean of $56,000 and a standard deviation of $12,000. The starting salaries of fem

Case 4 Regression
Analysis
Mithun Mitra Nomula
Introduction
Life satisfaction is the way people estimate their lives and how they think about where
they are heading in the future. It is a measure of well-being and may be evaluated in
terms of frame of min

Case Report 3
Software Selection
11/11/2015
Mithun Mitra Nomula
Introduction:
R is a free software tool for statistical computing and graphics. It compiles and runs on a ample
variety of Windows and Unix platforms. From the past 10 years, the thrust comin

OMIS 3350 DECISION MAKING AND ANALYSIS I
Sample Exam II
Guidelines
1. Time available: 2 hours.
2. Coverage: Keller chapters 10-13,15-18.
3. The only material you may consult is during the exam is an 8.5 by 11 sheet of
handwritten notes (both sides may be

OMIS 3350 DECISION MAKING AND ANALYSIS I
Sample Exam I
Guidelines
1.
2.
3.
4.
Time available: 1 hour 15 minutes.
Points available: 95, counts out of 85, maximum score is 85.
Coverage: Keller chapters 1-9.
The only material you may consult is during the ex

OMIS 3350 DECISION MAKING AND ANALYSIS I
Exam II Study Guide
Guidelines
1. Time available: 1 hour 15 minutes.
2. The coverage described herein is guaranteed. If a topic is not listed it will not be on the
exam. Coverage: Keller chapters 10-13 and 15-18. W

OMIS 3350 DECISION MAKING AND ANALYSIS I
Exam I Study Guide
Guidelines
1. Time available: 1 hour 15 minutes.
2. The coverage described herein is guaranteed. If a topic is not listed it will not be on the
exam. Coverage: Keller chapters 1-9. Weights (rough

what
One
populatio
n
Case
with
with
unknown
Population
proportion
Variance 2 and
Standard
Deviation
Two
populatio
n
X1 ,
X2 , 1 ,
2 are given
X 1 X 2
Test stats
x
n
z=
x
s
n
t =
p
z=
(1 )
( n1 ) s 2
2
=
2
Confidence interval
x z/ 2
n
xt
2
, df

OMIS 3350: Extra Problem sets for Linear and Multiple Regression &
Correlation Analysis
1. Critics of television often refer to the detrimental effects that all the violence shown on
the TV has on children. However, there may be another problem. It may be

Two Population
Sampling Distribution: Difference of two means
Case 1: The expected value and variance of the
sampling distribution of
are given by:
mean:
standard deviation:
(also called the standard error)
Page 1
Sampling Distribution: Difference of t

Analysis of Variance
1
Analysis of Variance
Analysis of variance is a technique that allows us to
compare two or more populations of interval data.
Analysis of variance is:
an extremely powerful and widely used procedure.
a procedure which determines

Leavey Graduate School of Business
OMIS 3350 - Problem sets for ANOVA with Solution
1. How does an MBA major affect the number of job offers received? An MBA student
randomly sampled four recent graduates in each Finance, Marketing and Management
and aske

Sentiment Analysis
Mithun Mitra Nomula
10/30/2015
Introduction
In this case study I would like to perform sentiment analysis between two big festivals, one is Halloween and other
is Diwali. Halloween is celebrated by millions of people in multiple countri