Q2.
The breaking strength of a rivet has a mean value of 10,000 psi and a standard
deviation of 500 psi.
a. What is the probability that the sample mean breaking strength for a random sample
of 40 rivets is between 9950 and 10,250?
b. If the sample size h
STAT 231 Assignment 4
due Monday April 4 at noon
1. According to University of Florida sociologist Michael Radelet, if you keall a white person (in
Florida), the chances of getting the death penalty are three times greater than if you kill a black
person
STAT 231
Introduction to Statistics
SOS Exam Aid
December 18th, 2010
Confidence Intervals with the Relative Likelihood Function
n
Recall the likelihood function is defined L( ) f ( xi ) where f ( xi ) is a pdf
containing the unknown parameter
i 1
Now, go
STAT 231 Spring 2007 - Quiz 1
This quiz is out of 32 marks, each mark is denoted by [1] in the following mark
scheme.
Please mark in RED INK and give a brief indication to the student of why you
have taken o marks when you do. The solutions are in BOLD, e
STATISTICS 231
Test 1
February 05, 2009
Name: _
Last Name
Student #: _
Section 1
_
First Name
userID: _
Section 3
Instructions:
1.
Please CIRCLE your section number above.
2.
This test paper consists of 6 pages including this title page.
3.
A basic scient
STAT 231 Test 1
Question
PART 1
PART 2: Q1
Q2
Q3
Q4
Total
Marks Available
6
10
5
6
3
30
Marks Obtained
Solutions and a Marking Scheme
PART 1: (One mark to each CORRECT ANSWER)
Question
1
2
3
4
5
6
Answer
E
C
A
D
B
E
PART 2: Answer each question in the spa
STAT 231 Spring 2007 - Quiz 2
This quiz is out of 33 marks, each mark is denoted by [1] in the following mark
scheme.
Please mark in RED INK and give a brief indication to the student of why you
have taken o marks when you do. The solutions are in BOLD, e
Statistics 231 Test 2 - March 9th, 2006
4:45-5:45 pm
SOLUTIONS
1. Figure 1(a) shows a scatter-plot of the variates Taste and Acetic acid. The solid line is the
maximum likelihood t of Model ?.
(a) Dene the estimated residual and the tted value correspondi
Solutions and a Marking Scheme for Test 2
Give part marks for correct steps if final answer is wrong.
Give full marks for correct final answer.
1. The dean of admissions in a large university has determined that the scores of the
freshman class in a mathe
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STAT231: STATISTICS
Paul Marriott
pmarriott@math.uwaterloo.ca
May 8, 2008
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Chapter 3: Models and the Likeliho
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STAT231: STATISTICS
Paul Marriott
pmarriott@math.uwaterloo.ca
May 8, 2008
Page 1 of 37
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Chapter 2: Statistical Sc
Moment Generating Functions
Continuous Distributions The Uniform distribution from a to b
a 1 a f ( x) = b - a 0
f ( x)
0.4
aa x b otherwise
0.3 0.2
0.1 0 0
1 b-a
5
a
10
x
15
b
The Normal distribution (mean , standard deviation )
- 1 f ( x) = e 2
( x- )
CS 115 Fall 2009
Assignment 2
Due at 5:00 PM on Tuesday, October 13
For full marks, you must use the design recipe when writing functions from scratch.
The solutions you submit must be entirely your own work. Do not look up either full or
partial solution
CS 115 Fall 2009
Assignment 4
Due at 5:00 PM on Tuesday, October 27
Make sure to use the list template in developing your functions. It will help keep you on track.
Be sure to download the interface le from the course Web page and to follow all the instru
CS 115 Fall 2009
Lab 2: Designing functions
Week of September 21
Create a separate le for each question. Keep them in your Labs folder, with the name liqj
for Lab i, Question j . See Helpful tips for information on creating and naming les.
Download the he
CS 115 Fall 2009
Documentation for the potatohead.ss teachpack
This teachpack is intended to provide a gentle introduction to creating images. Information on
how to install teachpacks can be found on the Helpful Tips page of the course Web site.
We introd
CS 115 Fall 2009
Lab 3: The design recipe and helper functions
Week of September 28
The purpose of this lab is for you to get practice in using the design recipe, including testing.
Make sure to use check-expect or check-within, as appropriate. We have pr
CS 115 Fall 2009
Lab 4: Booleans, predicates, conditionals
Week of October 5
Create a separate le for each question. Keep them in your Labs folder, with the name liqj
for Lab i, Question j .
Download the headers for each function from the le labinterface4
CS 115 Fall 2009
Lab 5: Structures
Week of October 12
Create a separate le for each question. Keep them in your Labs folder, with the name liqj
for Lab i, Question j .
Download the headers for each function from the le labinterface5.ss linked off the
Labs
CS 115 Fall 2009
Documentation for the compound.ss teachpack
The teachpack compound.ss contains structures used for manipulating chemical compounds.
Information on how to install teachpacks can be found on the course Web site.
1
Structures
(dene-struct co
CS 115 Fall 2009
Documentation for the product.ss teachpack
The teachpack product.ss contains structures used for manipulating product information.
Information on how to install teachpacks can be found on the course Web site.
1
Structures
(dene-struct sin
CS 115 Fall 2009
Strings and characters
The following string and character functions will be of use in the course. Further information
on these and other functions can be found in the DrScheme Help Desk (see the Helpful Tips
page on the course Web site fo
CS 115 Fall 2009
Documentation for the world.ss teachpack
The world.ss teachpack allows you to create animations. Some of the functions are explained here in detail. Full documentation of these and other functions can be found in the
DrScheme Help Desk. M
CS 115 Fall 2009
Assignment 1
Due at 5:00 PM on Tuesday, October 6
For this and all subsequent assignments, you are expected to use the design recipe when writing
functions from scratch. The solutions you submit must be entirely your own work. Do not look