Math 338 Chapter 6 Homework Fall, 2016
Part 4
Question #1 A box of Teddy Grahams chocolate cookies is supposed to weigh 250 grams. There is some
variat
Bliss (1952) was interested in the effect of Vitamin C on tooth growth in guinea pigs. The data from this
study can be found in the toothgrowth file on Titanium. Upload this data to Rguroo.
Numerical Variables
Variab No. No.
No.
Min
le
read observed Missi
Lab Assignment #8
Math 338
Fall, 2016
Due Sunday (10/9)
Part I. Means for Normals
A central idea in Statistics is the notion of sampling variability. Specifically, we have noted how a
sample estimate (i.e. a statistic such as x or ^p ) of a characteristic
Chapter 9 Practice Free Response
1. A certain beverage company is suspected of underfilling its cans of soft drink. The
company advertises that its cans contain, on the average, 12 ounces of soda with standard
deviation 0.4 ounce.
(a) Compute the probabil
Lab Activity #2
Suppose that 25 people are surveyed as to their beer-drinking preference. The
categories were respectively: 1. "Domestic Can", 2. "Domestic bottle",3. "Import
Can", 4."Import bottle". The raw data is:
1) 3, 4, 1, 1, 3, 4, 3, 1, 3, 2, 1, 2,
Math 338
Lab Assignment #6
Spring 2017
Due Wednesday (3/15)
Part I. Confidence Intervals for Means ( known) of Normal Draws
The Central Limit Theorem says that the sample mean is approximately normally distributed for large
samples. We can take advantage
Lab Assignment #1
Math 338
Spring 2017
Due Tuesday (02/07)
Part I. Eye Color Dataset
For this part of the lab, we will explore the graphical features of Rguroo using the dataset provided on
Titanium called HairEyeColor. Download the dataset to your deskto
Math 338
Lab Assignment #3
Spring 2017
Due Tuesday (02/14)
For this lab assignment, you will get into groups of 3 4 to discuss/solve these problems together. You
must be present in lab to get full credit for this assignment.
Name 1: Lacy Fitzgerald-Boggis
Math 338
Exam 1 Study Guide
Section 1.1
Know the definitions of an cases, labels, variables, and values
- Cases are objects used to describe a data set
- Labels are variables that are appointed to cases
- Variables are the characteristics of the cases
- V
Math 338
Exam 1 Study Guide
Section 1.1
Know the definitions of an cases, labels, variables, and values
Know the definitions of categorical variables and quantitative variables
Know the four types of scales described in class
o Nominal
o Ordinal
o Interva
Lab Activity 3
3.1
3.2
stride
3.3
3.4
Application 1)
a) A straight line would be good to describe the date represented in this plot. The
stride data appears to slip once speed hits 22, but for the speeds 15-21, the relationship is
nearly a straight line.
Math 338
Lab Assignment #1
Spring 2017
Due Wednesday (01/25)
Part I. Eye Color Dataset
For this part of the lab, we will explore the graphical features of Rguroo using the dataset provided on
Titanium called HairEyeColor. Download the dataset to your desk
Math 338
Chapter 6 Homework
Spring, 2017
Part 3
Question #1 A researcher wants to know if the average time in jail for robbery has increased from what it
was several years ago when the average sentence was 7 years. He obtains data on 400 recent robberies
Math 338
Chapter 6 Homework
Spring, 2017
Part 2
Question #1 A student curious about the average number of chocolate chips in a commercial brand of
cookie estimated the standard deviation to be 8. If he wants to be 99% confident in his results, how many
ch
Math 338
Chapter 8 Homework
Spring, 2017
Part 3
Question #1 Suppose you want to know which of two manufacturing methods will be better. You create
10 prototypes using the first process, and 10 using the second. There were 3 defectives in the first batch
a
Math 338
Chapter 8 Homework
Spring, 2017
Part 2
Question #1 We want to construct a 95% confidence interval for the true proportion of all adult males
who have spent time in prison, with a margin of error of 0.02. From previous studies, we believe the
prop
Math 338
Homework Chapter 8
Spring, 2017
Part 1
Question #1 The correct rule for proportions is that we can create confidence intervals for p based on:
a. if n is at least 10.
b. at least 15 successes and 15 failures.
c. if n 30.
Question #2 A sample of 7
32. Find the resultant of the following
three vectors. The magnitudes of the
vectors area = 5.00 km, b = 10.0
km, and c 5 20.0 km.
a.m.vu.u.ma.w.
M gages. lmAulka
33. Find the resultant of the following
three forces. The magnitudes of the
forces are F.
Physics 212
In Class Problems
1) Charges are arranged and fixed as shown in the diagram to the
right with q = 7 C. The horizontal and vertical distances
between adjacent charges are 5 cm.
3q
+9q
+4q
+8q
+4q
+3q
+1q
a) Calculate the magnitude and directio
Physics 212
Circuit Lecture Example Problems
EX. A
Calculate the equivalent capacitance of the circuit.
8 F
5 F
12 F
EX. B
Calculate the equivalent capacitance of the circuit.
10 F
5 F
7 F
EX. C
Analyze the following circuit.
C1 = 10 F
20 V
C2 = 30 F
Q
C
Math 338
Lab Assignment #2
Spring 2017
Due Monday (02/06)
Part I. Characteristics of a Distribution
Bliss (1952) was interested in the effect of Vitamin C on tooth growth in guinea pigs. The data from this
study can be found in the toothgrowth file on Tit
Math 338
Chapter 5 Homework
Spring 2017
Part 2
Question #1 Show that the following scenario describes a Binomial setting:
A nutrition study chooses an SRS of college students. They are asked whether or not
they usually eat at least five servings of fruits
Class (Day/Time)_
Name_
Math 338 Quiz 4
1. What are the three measures of central tendency mentioned in class?
a.
Mean
b.
Median
c.
Mode
(3 points)
2. What are the four measures of the spread of a distribution that were mentioned in
class?
(4 points)
a.
R
Name_
Class (Day/Time)_
Math 338 Quiz 3
You are studying the effects of a newly developed drug that is supposed to help people
lose weight. You have grouped the test subjects by sex, age, and geographical location.
The dosages of the drug vary from 0mg (i
Quiz 2: Math 335
NAME:
Fall 2016
Dr. M. Jamshidian
Show your work on all the problems.
1. An urn contains 4 white balls and 10 black balls. Balls are selected at random, and without replacement from this urn. What is the probability that the first black b
Math 338
Homework: 2.1-2.3 (RStudio)
Homework: 2.1-2.3 (RStudio)
Due: Tue, Sep 13
Introduction to the Practice of Statistics (8th Edition) by Moore, McCabe, Craig
Make sure to include all your Rstudio commands and the corresponding results.
You need to
Math 338
Homework: 1.1 1.2 (RStudio)
Fall 2016
Homework: 1.1 1.2 (RStudio)
Due: Tue, Sep 6
Introduction to the Practice of Statistics (8th Edition) by Moore, McCabe, Craig
Save the data file into your computer to a directory of your choice.
Make sure to
Math 338
Homework: 1.3 (RStudio)
Fall 2016
Homework: 1.3 (RStudio)
Due: Thu, Sep 8
Introduction to the Practice of Statistics (8th Edition) by Moore, McCabe, Craig
Make sure to include all your Rstudio commands and the corresponding results.
Default plo
Region
RelativeTo1913 RelativeToPast4
Bristol
94
82
Cardiff
112
80
English Agents
78
83
English O
68
88
English P
46
99
English R
111
99
Glasgow
66
78
Liverpool
140
106
London
428
105
Manchester
190
107
Newcastle-on-Tyne
118
115
Scottish
24
78
Name:
Math 338
Exam 1 Lab
Spring 2017
Use R to answer the following questions. You need to include both the R-codes and
the results. Each question should be on one page of paper.
Your answers should look like this:
Answer:
> R codes.
Result.
(insert comme
Section 10.1 & 10.2 : Linear Regression Model and One-way ANOVA
Recall that in chapter 6 and 7 we used sample mean to estimate the population mean
via confidence intervals and hypothesis testing.
sample x estimate
We will follow the same approach for the
Math 338
Chapter 11 Example
For this example, we will perform an analogous investigation for a data set called icecream.txt (available
in Titanium).
We will consider predicting ice-cream consumption (IC) from price, income, temperature, and/or year.
1. Ob
Math338
Name:_
Lab Ch 11: Multiple Regression Analysis
Working with the file named happiness.csv
Consider the following five variables for each nation:
LSI, life-satisfaction score, an index of happiness;
GINI, a measure of inequality in the distributio
Math 338
Quiz 3
Spring 2017
Name:_KEY
Show work for full credits. Use R as needed. You dont need to write the R codes, even though its
suggested for future exam preparation.
1. Motor vehicles sold to individuals are classified as either cars or light truc