SOLUTIONS TO ASSIGNMENT 1
Question 1
Data were collected on 96 species of mammals from zoo records and the literature. These mammals were
grouped on the basis of the observed average litter size. This is an observational study, the group status of
the mam
Statistics 252 Homework # 2 Solutions Summer 2015 Paul Cartledge
STAT 252 Homework 2 (39 marks) Due Monday, July 20 by 10 pm
NOTE: See the homework #2 file for expectations regarding hypothesis tests and
confidence intervals.
There are no extensive comput
Statistics 252 Homework #1 Solutions Winter 2016
STAT 252 Homework 1 Solutions (70 Marks) Due Thursday, February 4 at 10pm
Show all your work and include appropriate justification to receive full credit for a solution. Single numerical
answers (unless ind
Statistics 252 Homework # 1 Winter 2016
STAT 252 Homework 1 (70 Marks) Due Thursday, February 4 at 10pm
Show all your work and include appropriate justification to receive full credit for a solution. Single numerical
answers (unless indicated) will not re
Topic 4 Simple Linear Regression
Basics/Review
Topics 2 & 3 explored relationships between a categorical (explanatory) variable and a
numerical (response) variable. Suppose instead a relationship between two numerical
variables. Specifically, a response a
SOLUTIONS TO ASSIGNMENT 4
Question 1
(a) The purpose of the study is to establish a generalized body fat percentage prediction equation by
using age, height and weight of an individual, and some simple circumference measurements. The
experimental units in
SOLUTIONS TO ASSIGNMENT 3
Question 1
The study is an example of an observational study. A random sample of 60 tall buildings was selected from
those for which dates of completion were available. As random sampling was used, we can use the data to
generali
Statistics 252 Homework #1 Solutions Summer 2015
STAT 252 Homework 1 Solutions (60 marks) Due Monday, July 13 by 10pm
1. (4 marks) Suppose m c
s
n
.
a) (2 marks) Solve for c (as a function of m, n and s).
m n cs
c
m n
s
b) (2 marks) Solve for n (as a fun
Statistics 252 Homework # 2 Solutions Winter 2016
STAT 252 Homework 2 (44 marks) Due Thursday, February 25 by 10 pm
NOTE: See the homework #2 file for expectations regarding hypothesis tests and
confidence intervals.
There are no extensive computations re
SOLUTIONS TO ASSIGNMENT 5
Question 1
(a)
The purpose of the study was to examine the association of socioeconomic status of parents
(adoptive and biological) with intelligence of their children. In particular, the study was to
determine which of the two f
SOLUTIONS TO ASSIGNMENT 2
Question 1
(a) Patients were recruited from cancer clinics and additional cases of healthy individuals were selected.
The cancer patients were classified into 3 groups depending on the stage of the disease benign,
primary and rec
Statistics 252 Homework # 3 Solutions Summer 2015 Paul Cartledge
STAT 252 Homework 3 (38 marks) Due Wednesday, August 5 at 10pm
NOTE: See the homework #3 file for expectations regarding hypothesis tests and
confidence intervals.
Show all your work and inc
Statistics 252 Homework # 4 Solutions Summer 2015 Paul Cartledge
STAT 252 Homework 4 (57 marks) Due Monday, August 10 at 10 PM
1) (17 marks total) Persistent patent ductus arteriosus (PDA) is a medical condition that affects many very
low-birth weight inf
Sample Exam Questions
Multiple Choice:
MC1. Which of the following is a positive statement?
a.
b.
c.
d.
e.
When the price of a good goes up, consumers buy more of it.
When the price of a good goes up, firms produce more of it.
When the federal government
Statistics 252 Homework # 2 Fall 2015
STAT 252 Homework 2 (55 marks) Due Wednesday, October 14 by 10 pm
Show all your work and include appropriate justification to receive full credit for a solution. Single numerical
answers (unless indicated) will not re
Lab 3: Simple Linear Regression Respiratory Rates for Children
1) (a) The study design is observational study. Observational study is the study in which the individuals
are pre-classified into the different treatment groups. The experimenter has no contro
1.a) There is a positive association between number of pairs and time it takes for extinction.
Although the data points are scattered and there is no strong linear association, the data trend
does support that species with larger numbers of nesting pairs
1.(a) The experimental units are the semiconductor wafers. The response variable is film
thickness, which will be measured in angstroms. The two factors in the experiment are
temperature and pressure, which are both in three levels: 1=low, 2=middle and 3=
SOC 210 - Problem Set 1
Healy and Prus Chs. 1-2 and Math Review
Due Date:
Week 3 Monday (Jan. 23rd) during your assigned lab
If not turned in during lab, this assignment must be submitted before 5:00pm on Monday, January
23, 2017 to 6-23 Tory
Directions:
Topic 2 One or Two Population Means
T-tools: A General Approach
Inferential procedure in words:
1. Indicate parameter in question.
2. Indicate estimator used to estimate said parameter.
3. Find sampling distribution of estimate (or standardized estimate).
SOLUTIONS TO ASSIGNMENT 2
Question 1
(a)
The purpose of the study is to compare the survival times of patients, who have advanced cancers
of the breast, bronchus, colon, ovary or stomach, and then examine whether patient survival differs
with respect to t
Statistics 252 Homework # 4 Fall 2016
STAT 252 Homework 4 (74 marks) Due Friday, December 2 by 10 pm
For questions that state SHOW ALL STEPS, write all the steps of a hypothesis test or confidence interval as
indicated below. For other questions that say
Chapter 1
The 3 areas of finance are:
1. Corporate Finance (Financial Management) Focuses on such decisions as to which assets to buy, how to fund those assets and how to run the firm to maximize the value of the
firm.
2. Capital Markets relates to the ma
Springer Texts in Statistics
Advisors:
George Casella Stephen Fienberg Ingram Olkin
E.L. Lehmann Joseph P. Romano
Testing Statistical
Hypotheses
Third Edition
With 6 Illustrations
E.L. Lehmann
Professor of Statistics Emeritus
Department of Statistics
Univ
1. Since the objects are randomly assigned to two different
groups(the treatment group and the control group), so it is an
randomized experiment. Therefore, we can draw a causal
inference
2.a) The mean for the treatment group is 129.8611 and the mean
for
ASSIGNMENT 5
TWO-WAY ANOVA
In this assignment, you will explore the relationship between three variables: gender, alcohol consumption, and
blood alcohol level. Specifically, you will examine the main effects and interaction effects of gender and
alcohol c
SOLUTIONS TO ASSIGNMENT 2
Question 1
(a) Patients were recruited from cancer clinics and additional cases of healthy individuals were selected.
The cancer patients were classified into 3 groups depending on the stage of the disease benign,
primary and rec
SOLUTIONS TO ASSIGNMENT 4
Question 1
(a) The scatterplot of time to extinction and number of pairs is displayed below:
Plot of Time of extinction versus Number of pairs
size
60.00
L
S
50.00
time
40.00
30.00
20.00
10.00
0.00
0.00
2.00
4.00
6.00
8.00
10.00
SOC 210 - Practice Problem Set 1
Healy and Prus Chs. 1-4
Directions:
Answer the following questions. You must show any and all work behind your calculations. When
calculations require rounding, round to two or four places past the decimal, unless you are
SOC 210 - Problem Set 2
Healy and Prus Ch. 3
Due Date:
Week 4 Monday (January 30th) during your assigned lab
If not turned in during lab, this assignment must be submitted before 5:00pm on Monday,
January 30, 2017 to 6-23 Tory
Directions:
Answer the follo
University of Alberta
ECON 102
Midterm 1 exam
Instructor: Mesbah Sharaf
Department of Economics
Fall 2014-2015
Allowed time: 50 minutes
Please copy your answer in the multiple choice sheet provided
The exam is 50 multiple choice
You are allowed to use a c
SOC 210 - Practice Problem Set 2
Hypothesis Testing Healy and Prus Chs. 5-10
Directions:
Answer the following questions. You must show any and all work behind your calculations. When
calculations require rounding, round to two or four places past the deci
University of Alberta
ECON 102
Version 1
Midterm 1 exam
Instructor: Mesbah Sharaf
Department of Economics
Fall 2015
Allowed time: 50 minutes
Please copy your answer in the multiple choice sheet provided
The exam is 35 multiple choice
You are allowed to us
SOC 210 - Problem Set 3
Healy and Prus Ch. 5-6
50 points total
Due Date:
Week 8 Monday (February 27th) during your assigned lab
If not turned in during lab, this assignment must be submitted before 5:00pm on Monday,
February 27, 2017 to 6-23 Tory
Directio