Name:_
Homework Assignment Ten
Due Friday, April 10th
Suggest Reading for New Material:
Chapter 9
1.) If the p-value equals 0.09 and = 0.10, what decision do you make, reject Ho or fail
to reject Ho?
STA 2023H - Exam 1 Formulas
Sample Mean
x
x1 x2 xn 1
xi
n
n
Sample Variance
x x x
2
s
2
1
2
2
x xn x
n1
2
2
1
xi x
n1
Sample Standard Deviation
s
1
xi x
n1
2
Z-score for Normal Distribution Calc
AA
MH
DD
CM
LW
CS
JK
ES
HW
LW
JM
BV
SC
SS
JD
VR
JH
FF
LS
MG
MB
F
F
F
F
F
F
F
F
F
M
M
M
M
M
M
M
M
M
M
M
M
3682
3400
3550
3600
3625
3630
3710
3840
3540
3540
3100
3450
3450
3530
3575
3580
3600
3605
3640
STA 2023H Homework Project Due November 16
Approximate Power of Z-test Using Estimated SD
From my EXCEL Programs webpage, download the file
Approximate Power for 1-sample and Paired-sample z-test and
STA 2023H Fall 2005 Exam 2
Discrete RVs : E ( X ) X xi pi
All RVs : E (a bX ) a b X
2
V (a bX ) b 2 X
Formulas
2
2
V ( X ) X ( xi X ) 2 p i xi2 pi X
E (a1 X 1 a n X n ) a1 1 a n n
2
2
V (aX bY ) a 2 X
STA 2023 Final Exam Formulas (Chapters 7&8)
Confidence Intervals: Estimate Critical Value * Standard Error
Significance Tests: Test Statistic
Parameter
Estimate
X
Estimate - Parameter(H 0 )
Standard
Chapter 5
Sampling Distributions
Introduction
Distribution of a Sample Statistic: The probability
distribution of a sample statistic obtained from a
random sample or a randomized experiment
What val
Chapter 3
Generating Data
Introduction to Data Collection/Analysis
Exploratory Data Analysis: Plots and Measures
that describe a set of measurements with no clear
research questions posed.
Statistic
STA2023HInClassProject
9/11Effectsonairrevenues
1. DownloadtheU.S.AirlineDataPre/Post9/11
o Variablesare:
o City1
o City2
o PopulationofCity1(1000s)
o PopulationofCity2(1000s)
o Distance
o AverageFare
MAR 5620
In-Class Project 1 Spring 2005
Step 1: Download the U.S. SMSA Per Capita Retail Sales 1992 dataset as a
text (.txt) file to your computer
Step 2: Import the file to EXCEL
File Open Filename (
Name: _
Homework Assignment Two
Due Friday, Jan. 23rd
Suggested Reading: Chapter 2: Sections 3-5
1.) Answer the following questions.
a) List two measures of center.
b) List four measures of spread.
c)
Homework Assignment Eleven
Due Friday, April 17th
Suggest Reading for New Material: Chapter 10 Sections 1 3
Name: _
Part A Identify each of the following as either two independent proportions, two
ind
Practice Questions for Exam 1
1. A used car lot evaluates their cars on a number of features as they arrive in the lot in
order to determine their worth. Among the features looked at are miles per gal
Practice Questions for Exam 1
1. A used car lot evaluates their cars on a number of features as they arrive in the lot in
order to determine their worth. Among the features looked at are miles per gal
Practice Exam 3
1. A simple random sample of commuting UF students was taken to determine the
average amount of money spent on gas per week. The 34 students surveyed gave an
average expenditure of $15
Practice Questions for Exam 2
Formulas for the test
Mean = np
Standard deviation =
z
1
n
Normcdf(bottom, top, mean, stdev)
Invnorm(proportionless, mean, stdev)
Binompdf(n,p,x)
Binomcdf(n,p,x)
Sampling
Name:_
Homework Assignment Nine
Due Friday, April 3rd
Suggest Reading for New Material:
Chapter 8 - 9
1. In 2008, the General Social Survey asked a random sample of 2,017 people if they were trying
to
Name: _
Homework Assignment Eight
Due Friday, March 27th
Suggest Reading for New Material: Chapter 8 Sections 1 3
1. In the 2010 the General Social Survey (GSS), 1192 people were asked if they had had
Name: _
Homework Assignment One
Due Friday, Jan. 17th
Reading: Chapter 1; Chapter 2 Sec. 1 2
1.) Define the following terms from Section 1.1 (Use your notes or textbook.)
Description:
Design:
Inferenc
Name:_
Homework Assignment Four
Due Friday, Feb. 13th
Suggest Reading: Chapter 4
1.) Explain the difference between an observational study and an experiment.
2.) Give an example of leading question.
3
Name: _
Homework Assignment Three
Due Friday, Jan. 30th
Suggest Reading: Sections 3.2, 3.3
1.) Define the term correlation from section 3.2 in the textbook.
2) For each scatterplot, describe the form,
Name: _
Homework Assignment Five
Due Friday, February 20th
Suggest Reading: Chapter 4 and Chapter 5
1.) Select the best answer for the question below.
A simple random sample of size n is one in which
Name:_
Homework Assignment Seven
Due Friday, March 13th
Suggest Reading for New Material: Chapter 6 Section 2-3
1. In 2014, about 34% of Americans voted in the last election. Suppose that this value i
Name:_
Homework Assignment Six
Due Friday, Feb. 27th
Suggest Reading: Chapter 5 Section 1 3, Chapter 6 Section 1- Section 2
1. List the probability model for the below situations. (Remember to list th
Chapter1
Looking at Data - Distributions
Introduction
Goal: Using Data to Gain Knowledge
Terms/Definitions:
Individiduals: Units described by or used to obtain
data, such as humans, animals, object