Max Benhayon
STA-201 Sep 2015
Study guide
Chapter 8
Estimating a population mean
Confidence intervals for one population mean when
also known as , transliterated as s .
is known
Confidence intervals for one population mean where
Chapter 9
Chapter 10
Cha
Max Benhayon
STA-201 Sep 2015
Written Assignment 7
Write your responses to the following topic.
Outliers: We know many types of data fall into a normal distribution with most of
the observations falling toward the middle. However, sometimes data are outli
Max Benhayon
STA-201 Sep 2015
Written Assignment 5
Write your response to the following topic.
Using probability: How can you use probability to improve your chances of winning
at a casino? Provide specific examples using concepts learned in this module.
Max Benhayon
STA-201 Sep 2015
Written Assignment 10
This written assignment draws on case study discussion exercises at the end of Chapter
8. When preparing your assignment, please identify each answer clearly by question and
its number. Case Study: The B
Max Benhayon
STA-201 Sep 2015
Written Assignment 5
Write your response to the following topic.
Using probability: How can you use probability to improve your chances of winning
at a casino? Provide specific examples using concepts learned in this module.
Max Benhayon
STA-201 Sep 2015
Final Written Assignment
Final Project Nyke
The problem:
Nyke is shoe companies who have decided the only way to stay competitive
during times of financial hardship is to make one type of size shoe for both males
and females
Max Benhayon
STA-201 Sep 2015
Written Assignment 6
The written assignment draws on case study discussion exercises at the end of
chapter. When preparing your assignment, please identify each answer clearly by
question and its number.
Case Study: Texas Ho
Max Benhayon
STA-201 Sep 2015
Written Assignment 9
Write your responses to the following topic. Errors in testing: Think of one example
of a Type I and Type II error in everyday life and comment on the ramifications of
those errors.
Type one errors happen
Max Benhayon
STA-201 Sep 2015
Written Assignment 8
The written assignment draws on case study discussion exercises at the end of
chapter. When preparing your assignment, please identify each answer clearly by
question and its number. Case Study: Chest Siz
Max Benhayon
STA-201 Sep 2015
Written Assignment 12
Focusing on Data Analysis: Using the data from Chapter 1: UWEC Undergraduates
(p. 34), and answer questions a, b, c, d, e, f, g (UWEC Undergraduates, p. 655). You
must calculate results by hand (though
Max Benhayon
STA-201 Sep 2015
Written Assignment 11
Write your responses to the following topic.
Association: We know association does not imply causation, but what does this
mean in your own words. Provide and discuss an example of two variables that are
Chapter 20
Comparing Groups
Recall from Ch14:
Sections 20.1-20.6
Let X and Y be independent random variables. Then X Y is a random variable and
Var ( X Y ) VarX VarY and SD( X Y ) VarX VarY
Comparing Proportions
Ex1
Suppose we are interested in if there i
STA2023
Lab 1
Name(s):
The following lab is to give you a chance to generate your own graphs and statistics using software.
Paste your graphs and statistics on this word document, use these graphs and statistics to answer a few questions, and then
submit
Chapter 17
Testing Hypothesis about Proportions
Sections 17.1-17.5
Example
National data in the 1960s showed that about 44% of the adult population had never smoked cigarettes. In
2008 a national health survey interviewed a random sample of 600 adults and
Chapter 15
Sampling Distribution Models (sample proportions and sample means) Sections15.1-15.5
Sample proportions
Ex1
Suppose we take a random sample of 100 people and find that 10% are left-handed.
We take another random sample of 100 people and find th
Chapter 16
Ex
Confidence Intervals for Proportions
Sections 16.1-16.4
Ghosts
Suppose you take a random sample of 100 U.S. adults and find that 56% of your sample believes in
ghosts. What can you say about the proportion of all U.S. adults who believe in g
Chapter 18
Inferences about Means
Sections 18.1-18.5
Recall: CLT (for sample Means)
When a random sample is drawn from any population with mean
sample mean,
and standard deviation
, its
x , has a sampling distribution that is approximately normal with x
Chapter 21
Paired Samples and Blocks
Sections 21.1-21.3
Paired Data:
Data are paired when the observations are collected in pairs or the observations of one group are naturally
related to the observations in the other group.
The simplest form of pairing i
Chapter 19
More about Tests and Intervals
Sections 19.1-19.5
Alpha Levels (significance levels) denoted -level
An -level is a threshold for the P-value that is set before the experiment is done.
If P-value < -level, reject H 0 .
If P-value -level, fail to
STA2023 Worksheet #1
The following problems come directly from the assigned homework.
They are due on the day of the test.
If you have been keeping up with the homework all along, feel free to just turn in all of
the homework together. I will go through i
Simply put, learning statistics can help
us: think more clearly about data
2. In this course, we will be working with
only those questions that can be
answered by statistics
3. What three things will we do as data
investigators? Examine the Question,
Anal