Lab 7: On Your Own
Kristin Jones
Score _
1. Calculate a 95% confidence interval for the average length of pregnancies (weeks) and
interpret it in context. Note that since youre doing inference on a single population parameter,
there is no explanatory vari
Lab 9 On Your Own
Kristin Jones
Score _
1. Sexual harassment in middle and high schools. A nationally representative survey of students
in grades 7 to 12 asked about the experience of these students with respect to sexual harassment.
One question asked ho
Lab 6: On Your Own
Kristin Jones
Score _
1. Using the following function (which was downloaded with the data set), plot all intervals.
What proportion of your confidence intervals include the true population mean? Is this
proportion exactly equal to the c
Lab 8: On Your Own
Kristin Jones
Score _
The question of atheism was asked by WIN-Gallup International in a similar survey that was
conducted in 2005. (We assume here that sample sizes have remained the same.) Table 4 on page
13 of the report summarizes s
Lab 4.2: On Your Own
Kristin Jones
Score _
Comparing Kobe Bryant to the Independent Shooter
Using calc streak, compute the streak lengths of sim basket.
1. Describe the distribution of streak lengths. What is the typical streak length for this simulated
i
Lab 2.4: On Your Own
Kristin Jones
Score_
1. Choose another traditional variable from mlb11 that you think might be a good predictor of
runs. Produce a scatterplot of the two variables and fit a linear model. At a glance, does there
seem to be a linear re
Lab 2.4: On Your Own
Kristin Jones
Score_
1. Choose another traditional variable from mlb11 that you think might be a good predictor of
runs. Produce a scatterplot of the two variables and fit a linear model. At a glance, does there
seem to be a linear re
Lab 5: On Your Own
Kristin Jones
Score _
So far, we have only focused on estimating the mean living area in homes in Ames. Now youll
try to estimate the mean home price.
1. Take a random sample of size 50 from price. Using this sample, what is your best p
Lab 1.3: On Your Own
Kristin Jones
Score _
1. Make a scatterplot of weight versus desired weight. Describe the relationship between these
two variables.
plot(cdc$weight~cdc$wtdesire)
The relationship shows a slope greater than 1 which implies that people
Lab 1: On Your Own
Kristin Jones
Score_
1. What years are included in this data set? What are the dimensions of the data frame and what
are the variable or column names?
The years included in the data set are 1940 2002.
dim(present)
[1] 63 3
The dimension
Module 5 Journal: Model Building for Stock Return Data
Learning Outcome: 1, 2, 3
The Excel data file is from the Wall Street Journal: Market Data Center
website provides the daily and 52-week international stock return data: the % Chg
column is for daily
Module 5 Assignment
Requirement:
Use MS-Word to complete the homework. Copy and paste any Excel output to your WORD file.
Type your conclusions in your WORD file. Please submit your assignment through the UNH
blackboard website.
Problem 1. Almost all U.S.
Module 5 Assignment
Requirement:
Use MS-Word to complete the homework. Copy and paste any Excel output to your WORD file.
Type your conclusions in your WORD file. Please submit your assignment through the UNH
blackboard website.
Problem 1. Almost all U.S.
Module 4 Journal
Write down the estimated regression model between the y-variable and the above x-variables (keep 4
decimals) from the given multiple regression output.
The regression model is:
Y=3.1220+0.0.3585*x1-0.0003*x2-0.0027*x3-0.0480*x4+0.3653*x5+
Hypothesis Testing Paper 1
Hypothesis Testing Paper (A one sample test)
Learning Team A
Brian Cardinal, Phillip R. Gideon, and Venus Wilson
University of Phoenix
RES/343 Research and Evaluation
Professor Gerald Rintala
July 13, 2009
Hypothesis Testing Pap
Chapter 1
a. For each of the four items listed, indicate whether the variable is categorical or numerical. If
it is numerical, is it discrete or continuous?
a. The primary place of purchase for cat food: categorical
b. Whether dry or moist cat food is pur
Almost all U.S. light-rail systems use electric cars that run on tracks built at street level.
According to the Federal Transit Administration, light-rail is one of the safest modes of
travel, with an accident rate of .99 accidents per million passenger m
Practice Exam
Chapter 3 - Numerical Descriptive Measures
SECTION
I :M ULTIPLE -CHOICE
1. Which of the following statistics is not a measure of central
tendency?
a) Arithmetic mean.
b) Median.
c) Mode.
d) Q3.
2. Which of the arithmetic mean, median, and mo
Module 3 Assignment
Requirement:
Problem 1. Business Week conducted a survey of graduates from 30 top MBA programs
(Business Week, September 22, 2003). On the basis of the survey, assume that the mean annual
salary for male and female graduates 10 years a
Chapter (11)
Which of the following food groups is most extensively used in China?
a. Fruits
b. Vegetables
c. Meat
d. Milk
Which of the following regions of Chinese cuisine is most familiar to Americans?
a. Sichuan - Hunan
b. Yunnan
c. Canton
d. Honan
Wha
Module 4 Group Discussion Test
Question 1. Chapter 13 Case Problem. The estimated regression equation between y=New
subscriptions and x=Hours is
A)
B)
C)
D)
Y=-300.3098+3.4564*x
y=-413.8204+4.4080*x
y=-513.1204+1.4080*x
y=-313.8278+2.4080*x
Answer B
( y=-
Module 1 Journal: Stock return data analysis
Learning Outcome: 1, 2, 3
The website: http:/online.wsj.com/mdc/public/page/2_3023-intlstkidx.html provides the daily
and 52-week international stock return data: the % Chg column is for daily return; the YTD %
Module 3 Assignment
Requirement:
Use MS-Word to complete the assignment. Copy and paste any Excel output to your WORD file.
Please submit your assignment through the UNH blackboard website.
Problem 1. Business Week conducted a survey of graduates from 30
Module 4 Assignment
Requirement:
Use MS-Word to complete the assignment. Copy and paste any Excel output to your WORD file.
Type your conclusions in your WORD file. Please submit your assignment through the UNH
blackboard website.
Problem: Jeff Sagarin ha
Chapter 9 Review Quiz
Question 1. Which of the following would be an appropriate null hypothesis?
A) The mean of a population is equal to 55.
B) The mean of a sample is equal to 55.
C) The mean of a population is greater than 55.
D) Only A and C are appro
Module 3 Group Discussion Test
Question 1. Chapter 7 Case Problem. Based on the Chapter 7 case, the population mean is 1.005,
population standard deviation is 0.10. A sample size of 25 random times was selected. The
probability that the mean upload speed
Module 4 Journal: Stock return data analysis
The website: http:/online.wsj.com/mdc/public/page/2_3023-intlstkidx.html provides the daily
and 52-week international stock return data: the % Chg column is for daily return; the YTD %
Chg column is for Yield T
Module 2 Assignment
Requirement:
Use MS-Word to complete the assignment. Copy and paste any Excel output to your
WORD file. Please submit your assignment through the UNH blackboard website.
Problem 1. A yield improvement study at a semiconductor manufactu
Chapter 2 Review Quiz
Question 1. The chancellor of a major university was concerned about alcohol abuse on her
campus and wanted to find out the proportion of students at her university who visited campus
bars on the weekend before the final exam week. H