Assignment 2
MBAD 6222 - Summer II 2014
July 30, 2014
Assignment is due on 8/13/14 at 11:59 p.m. ET. Please note that the due date will
not be extended.
There will be a penalty for late submission (25% reduction) if you submit it after the
due but befor

MBAd 222
Data Analysis & Decisions
Assignment
Student ID: G
(Please note: In reporting the values requested below, please be sure that your value is accurate to at least
three places to the right of the decimal point.)
You are the Admissions Director at H

Data Analysis and Decisions
Lecture Set 3
Babak Zafari
The George Washington University
School of Business
Department of Decision Sciences
Summer 2014
Outline
Steps in Statistical Inference
Hypothesis Testing
Single Sample t-test
p-value
Independent Sampl

Data Analysis and Decisions
Lecture Set 5
Babak Zafari
The George Washington University
School of Business
Department of Decision Sciences
Summer 2014
Outline
Regression Single Continuous Variable
Regression Single Discrete Variable
Dummy Variables
Multip

Data Analysis and Decisions
Lecture Set 1
Babak Zafari
The George Washington University
School of Business
Department of Decision Sciences
Spring 2014
Outline
Statistical Inference
Sampling
Random Sampling
Population/Sample Parameters
Sampling Distributio

Data Analysis and Decisions
Lecture Set 2
Babak Zafari
The George Washington University
School of Business
Department of Decision Sciences
Summer 2014
Outline
Point estimation and confidence intervals
Procedure for constructing confidence intervals for th

MBAd 6222
Data Analysis & Decisions
Assignment
Student ID:
G
A random sample of applicants for employment in 2011 to your company was administered two equivalent
forms ("C" and "T") of an English fluency test (in random order). The Form C test required th

Assignment
MBAd 6222
Data Analysis & Decisions
Student ID:
G
Researchers have long been interested in identifying factors which affect worker
absenteeism (defined as the number of days a worker is absent from his or her job across
a one-year period). Two

MBAd 222
Judgment, Uncertainty, & Decisions
Assignment
Student ID: G
(Please note: In reporting the values requested below, please be sure that your value is accurate to at least
three places to the right of the decimal point. This Assignment is based in

MBAd 6222
Data Analysis & Decisions
Assignment
Student ID:
G
The instructor of an online statistics course wishes to know whether, in the population of all
students, those who complete more optional quizzes tend to earn higher grades in the course. The
in

Assignment
MBAd 6222
Data Analyis & Decisions
Student ID:
G
1. A cannery claims that its sardine cans have a net weight of 8 oz., with a standard
deviation of 0.1 oz. You take a simple random sample of 30 cans and encounter a
sample mean of 7.85 oz. Are y

Data Analysis and Decisions
Lecture Set 4
Babak Zafari
The George Washington University
School of Business
Department of Decision Sciences
Summer 2014
Outline
z-test for two proportions
Chi-Square test for goodness-of-fit
Chi-Square test of independence
A