ACE 210 Practice Midterm 1Fall 2010
Part I Multiple Choice
Choose the answer that is most correct. You do not need to provide any
explanations for your answers or show your work in this section. Clearly indicate
your answer. Ambiguities will receive zero

ACE 261 Fall 2010
Practice Midterm 3
Part I Multiple Choice
Choose the answer that is most correct. You do not need to provide any explanations for your
answers or show your work in this section.
1. In a chi-square analysis, the expected counts measure:
A

Part I Multiple Choice
Choose the answer that is most correct. You do not need to provide any explanations for your
answers or show your work in this section. Clearly write each answer on a separate line in your
answer book. Ambiguities will receive zero

Short Answer Question 2
The other day I bought a bag containing a mixture of dark chocolate and milk chocolate
M&Ms. The pack contained 20 M&Ms. I decided to randomly select 4 of the
M&Ms without replacement and see whether they were dark or milk chocolat

ACE 261
Lab Assignment 3
Due February 20th in Class
For this assignment you will be using the dataset on compass nba_mls.xls.
ComparingtheSalariesofNBAplayerstoMLSplayers.
Thedataincludessalariesofthetoptwentyfivehighestpaid
playersinbothleagues.
1) Whati

ACE 261: Lab 13 Homework
Due 5/6
1) Researchers are studying pomegranate's antioxidants properties to see if it might be
Helpful in the treatment of cancer. In one study, mice were injected with cancer cells
And randomly assigned to one of three groups, p

ACE 261
Lab Assignment 5
Due March 13th
Immanuel Campbell
icampbe2
1.
Consider a large ferry that can accommodate cars and buses. The toll for a car is $3, and the toll for buses is $10. Let x be
the number of cars and y be the number of buses carried on

ACE 261
Lab Assignment 4
Due October 9th in Class
1. A small manufacturing firm has 250 employees. Fifty have been employed for less
than 5 years and 125 have been with the company for over 10 years. Suppose that
one employee is selected at random from a

ACE 261
Lab Assignment 7
Due November 6th in Class
1.
In a random sample of 6212 US schools, 1720 indicated that they ate
fast food once a day or more. Estimate p, the proportion of US school
children who eat fast food on a typical day, and use proper not

ACE 261
Lab Assignment 1
For this assignment you will be using the dataset on compass MLB - 05.xlsx.
1. Lets consider the variable Beer oz: make a rough estimate for each of the
following:
a. Variable name: Beer oz means the number of ounces each beer con

ACE 261 Lab 6 Homework
Due Date: March 4, 2016 at 2pm
1. Consider a system consisting of four components, as pictured in the diagram below.
Components 1 and 2 form a series subsystem, as do Components 3 and 4. The two subsystems
are connected in parallel.

ACE 261
Lab Assignment 5
Due October 16th
NOTE: you have to show your work, how your results were obtained.
1.
Consider a large ferry that can accommodate cars and buses. The toll for a car
is $3, and the toll for buses is $10. Let x be the number of cars

ACE 261 Lab 12 Homework
Due April 22, 2016
1) Some commercial airplanes re-circulate approximately 50% of the cabin air in order to
increase fuel efficiency. Researchers studied 1,100 airline passengers, among which some
traveled on airplanes that re-circ

ACE 261 Lab 12 Homework
Due April 22, 2016
1) Some commercial airplanes re-circulate approximately 50% of the cabin
air in order to increase fuel efficiency. Researchers studied 1,100 airline
passengers, among which some traveled on airplanes that re-circ

Lab 9 Homework
Due April 1, 2016
1) Suppose that a random sample of size 64 is to be selected from a population with mean 40 and
standard deviation 5.
a) What are the mean and standard deviation of the
x =40
x =.625
x sampling distribution?
b) What is the

ACE 261
Lecture 14
October 12, 2010
Sampling Distribution
Describes how sample results behave if
we draw repeated samples of a particular
size n from a larger population
Typically we only draw one sample, but
well use the statistical properties of the
s

ACE 261
Lecture 13
October 7, 2010
Announcements
Homework for chapter 7 due next Tuesday
at noon
The Geometric
Suppose an experiment consists of a sequence of trials
with the following conditions:
1. The trials are independent.
2. Each trial can result i

ACE 261
Lecture 11
Sept 30, 2010
Announcements
Random Variables
A numerical variable whose value depends on the
outcome of a chance experiment is called a
random variable. A random variable associates a
numerical value with each outcome of a chance
exper

ACE 261
Lecture 9
Sept. 23, 2010
Chance Experiment & Sample Space
A chance experiment is any ac?vity or situa?on
in which there is uncertainty about which of
two or more possible outcomes will result.
The colle

ACE 261
Lecture 8-September 16, 2010
Least-Squares
Regression
X = explanatory & Y = response
But correlation coefcient (r) doesnt
distinguish
We want to predict the response from a
certain value of the explanatory variable
Thats where regression comes

ACE 261
Lecture 7
September 14, 2010
Are national rates of infant mortality & economic
development related?
Do women earn less than men? What if they have
equal qualications?
In states with the death penalty, are African
Americans convicted of murder more