SAMPLE MIDTERM EXAM
STAT 1051-10 FALL 2011
Answer all the questions. Please show full work for partial credit. Students are expected to abide by the GW honor code of academic integrity. 1) An engineer is interested in travel patterns in Washington D.C. Th
Name. SAMPLE FINAL EXAM
STAT 1051-10 FALL 2012 Answer all questions. Please show full work for partial credit. The students must honor the GW code of academic integrity during the exam. 1) A sample of eight workers in a clothing manufacturing company gave
Stat 1051: Introduc0on to Sta0s0cs
for Business and Economics
Tuesday, September 9, 2014
Announcements
Quiz 2 today
SPSS Project posted
Todays Material
Quar0les
Interquar0le range (IQR)
Boxplots; Outliers
ScaM
profnwr filmed
Stat 1051-11 NAME:
Fall 2013
SI Quiz 6: Monday, October 14, 2013 ', \
Z Ewafy 4 26
You must show all work to receive full credit. '1 ___
1) Let Z be a standard normal random variable with mean u = 0 and standard
deviation 0 = 1.
P/Dkfl" firaw/
NAME: 3W 0
Stat 1051-11
Fall 2013
S / Quiz 7: Monday, November 4, 2013
You must show all work to receive full credit.
1. Household incomes in Greenwich, CT have a mean of $180,000 and standard deviation of
$40,000. A random sample of 100
9'- Skull
Stat 1051-11awu..a.»w NAME: Bin; OH
Fal12013~451
Quiz 8: Monday, November 11, 2013
You must show all work to receive full credit.
1) To decide if a nuclear plant has to be reopened, a random sample of 500 adults in that
city were interviewed
,}
ppi. Sim!
Stat 1051-114www 50W NAME: 5/74 at:
Fall 2013
S 1 Quiz 4: Monday, September 30, 2013
1] On a day in December the probability that it will snow in Moscow is 0.7 and the
probability that it will snow in Boston is 0.4. Assume independence be
M. 81er ~ H
Stat 1051'1133WMl " thinks 0
Fall 2013
5\ Quiz 9: Monday, November 18, 2013
You must show all work to receive full credit.
1) A random sample of adults in a city will be interviewed to decide if a nuclear plant
should be reopened. It is
m. 31ml _ g .
Stat 1051-1 mom 1 Emma N AME: B 1 UK Off
Fall 2013
80-43 9' Quiz 2: Monday, September 16, 2013
1) 100 students took the midterm exam in an introductory business course, and the
F"
summary statistics for the scores are given below:
a O
A
P/thrlor )7 WI
Stat 1051-11
NAME: g1? 94 a#
Fall 2013
5 I Quiz 1: Monday, September 9, 2013
1. A city police officer using radar, checked the speed of 26 cars as they traveled
down a city street and the data are as given below:
zfzzsa/éztrxze 22543436
Prbfwvr 5mm! .
Stat 105111 NAME: 5 "'1 (M
Fall 2013
5 I Monday, October 21, 2013
75 mm es.
ow all work. Circle your answers.
Exam must be taken in pen to be eligible for a re-grade.
1) (22 pts) Psychologists tend to believe that there is a relationship
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by Ca
Chapter 4
The Concept of Random
Variables and
Probability Distributions
The Random Variable
A random variable is a variable that
assumes numerical values associated with
the random outcomes of an experiment
where one and only one numerical value is
assig
Stat 1051: Introduc0on to Sta0s0cs
for Business and Economics
Thursday, September 18, 2013
Announcements
Project due tomorrow
HW 4 posted
Today: Probability
Condi0onal probability
Probability tables
Mul0plica0on
Stat 1051: Introduc0on to Sta0s0cs
for Business and Economics
Tuesday, September 23, 2014
Announcements
Quiz Today
Todays Material: Probability
More on Independence
Law of Total Probability
Bayes Theorem
Te
Stat 1051: Introduc0on to Sta0s0cs
for Business and Economics
Thursday, September 25, 2014
Announcements
HW 5 posted
Todays Material: Random Variables
Discrete Random Variables
Probability Distribu0ons
Mean and Va
Stat 1051: Introduc0on to Sta0s0cs
for Business and Economics
Thursday, September 11, 2014
Announcements
SPSS Project posted
HW 3 posted
Today:
Graphing 2 or more quan0ta0ve variables:
ScaJerplot and ScaJerplot
Stat 1051: Introduc0on to Sta0s0cs
for Business and Economics
Tuesday, September 16, 2014
Announcements
SPSS Project
Quiz 3 today
Today: Probability
Combina0on Rule
Unions, Intersec0ons, Complements
Addi0on rule
SAMPLE MIDTERM EXAM
STAT 1051-DE
SUMMER 2016
Answer all the questions. Please show full work for partial credit. Students are
expected to abide by the GW honor code of academic integrity.
1) An engineer is interested in travel patterns in Washington D.C.
Hypothesis Testing
Chapter 6
An Introduction to Hypothesis
Testing
Goals
1.Distinguish Types of Hypotheses
2.Describe Hypothesis Testing Process
3.Explain p-Value Concept
4.Solve Hypothesis Testing Problems Based
on a Single Sample
What is a Hypothesis Te
Inference for Two Samples
Sections 7.2 & 8.2 in your textbook.
Introduction: Background
Nutritionists have often debated the most effective diet strategies to
losing weight.
Low carbohydrates.
Vigorous exercise programs.
Less calories
Others.
Mark Haub (2