MAT 121 / Quiz #3 / 80 points
DIRECTIONS: Show your work to ensure partial credit or explain how you arrived at your
conclusion whenever appropriate.
1. To estimate the average number of minutes it takes a typical employee at H&R Block to
prepare a tax re
Written Assignment #1
Directions: Answer each of the following questions. Show your work or explain how you
arrived at your conclusion whenever appropriate. Use your calculator.
In a random sample of 150 community college students, the mean number of hour
Quiz #2 - 80 points
DIRECTIONS: Be sure to clearly explain your thought process when answering each question,
especially if you hope to receive partial credit in the event that your solution is in some way
flawed.
1.
A study was done to determine the size
MAT 121 / Quiz #3 / 80 points
DIRECTIONS: Show your work to ensure partial credit or explain how you arrived at your
conclusion whenever appropriate.
1. To estimate the average number of minutes it takes a typical employee at H&R Block to
prepare a tax re
Quiz #4 80 points
DIRECTIONS: Show your work or explain how you arrived at your conclusion whenever
appropriate.
1. Minitab was used to construct the five number summary and boxplot below for a
sample of checkout times (measured in seconds) taken at Corne
1.
a. All customers in Wegmans between 8am and noon. Because whoever comes in
has the potential to buy something.
b. 200 customers that checked out in Wegmans.
c. Not random, it is convenience sampling. There is a time constraint and only the
first 200 we
1.)
a. The sample for these numbers came from a specific living situation: families in a
large, urban, apartment. These are three factors that can determine the family
size. You would need to determine where the typical American family lives or
gather dat
i.
ii.
iii.
9
Skewed Right
No frequency between 50-60 years, highest frequency between 20-30 years.
i.
Male occurs the most.
i.
no occurs more frequently.
i.
I would argue this graph is u-shaped (opposite to bell-shaped) because high
frequency data points
Quiz #5 - 80 points
DIRECTIONS:
Show your work or explain how you arrived at your
conclusion whenever appropriate.
1. Marvin is a safety inspector at a large industrial plant that has eight
divisions that do the same type of work. He recorded the number o
A)
Graph is skewed right. Outlier above 60 years. The mode would occur
around 20 years.
Summary statistics:
Column n
age
Mean
Variance
Std. dev.
Std. err. Median Range Min Max Q1 Q3
60 25.016667 73.101412 8.5499364 1.103792
B)
22.5
48
17
Lower fence= 5.5
2. A) Graph is skewed right because most of the data hits below 30 years. Outlier is after 60 years.
3. B) The male gender is the mode of this data, with 53.33%.
Summary statistics:
Column n Mean Variance Std. dev. Std. err. MedianRangeMinMaxQ1Q3
age
6025
a. i.) 2.08 hours. 22 hours of studying is 2.08 standard deviations above the
mean of 13.7 hours.
2213.7
=2.075
4
ii) -1.93 hours. Only 6 hours of studying is 1.93 standard deviations below
the mean.
613.7
=1.93
4
b. 119 students study between these hours
Susanna LaMarti
StatCrunch 1-3 Assignment
i.
What's the class width?
10
ii.What's the shape of the distribution for the
variable age?
Skewed right
iii.Describe any other distinctive features of the
distribution for the variable age.
The tail to the right
Susanna LaMarti
StatCrunch Assignment 3
Dotplot:
Question A: Describe any distinctive features, including the
shape, of the distribution for the variable age. (Third time is a
charm!)
This dot plot is skewed right. The tail of the plot is longer to the ri
StatCrunch Assignment #1 - Answers
2) Each graph is worth 2 points.
2i) What's the class width? The class width is 10 (20-10=5). (-2)
2ii) What's the shape of the distribu5on for the variable age? The distribu?on is skewed right.
(-2)
2iii) Describe
Quiz #2 - 80 points
DIRECTIONS: Be sure to clearly explain your thought process when answering each question,
especially if you hope to receive partial credit in the event that your solution is in some way
flawed.
1.
A study was done to determine the size
The information you provide here will be viewed only by your teacher.
Thank you.
1.
Name:_Allison Stewart_
2.
Major:_A.A. Liberal Arts for associates, International
Relations for bachelors
3.
School:_FLCC_
4.
What previous mathematics courses have you had
Econ 101A Solution to Problem Set 2
No late Problem Sets accepted, sorry!
This Problem set tests the knowledge that you accumulated in the lectures 5 to 8. It is focused on
preferences, utility functions, and utility maximization. General rules for proble
HOMEWORK ASSIGNMENT 1
MATH 10A LECTURE 001, FALL 2015, CRAIG EVANS
WRITTEN BY: JASON FERGUSON
[email protected]
DUE: Tuesday, September 1st in your discussion section [unless your GSI says otherwise].
Unless otherwise stated, please include an explana
LA NOTION DE MANIFESTE
Author(s): Anna Boschetti
Source: Francofonia, No. 59, Les manifestes littraires au tournant du XXIe sicle (Autunno 2010)
, pp. 13-29
Published by: Casa Editrice Leo S. Olschki s.r.l.
Stable URL: http:/www.jstor.org/stable/43016549
HOMEWORK ASSIGNMENT 2
MATH 10A LECTURE 001, FALL 2015, CRAIG EVANS
WRITTEN BY: JASON FERGUSON
[email protected]
DUE: Thursday, September 3rd in your discussion section [unless your GSI says otherwise].
Unless otherwise stated, please include an explan
HOMEWORK ASSIGNMENT 4
MATH 10A LECTURE 001, FALL 2015, CRAIG EVANS
WRITTEN BY: JASON FERGUSON
[email protected]
DUE: Thursday, September 10th in your discussion section [unless your GSI says otherwise].
Unless otherwise stated, please include an expla
HOMEWORK ASSIGNMENT 5
MATH 10A LECTURE 001, FALL 2015, CRAIG EVANS
WRITTEN BY: JASON FERGUSON
[email protected]
DUE: Tuesday, September 15th in your discussion section [unless your GSI says otherwise].
Unless otherwise stated, please include an explan
HOMEWORK ASSIGNMENT 3
MATH 10A LECTURE 001, FALL 2015, CRAIG EVANS
WRITTEN BY: JASON FERGUSON
[email protected]
DUE: Tuesday, September 8th in your discussion section [unless your GSI says otherwise].
Unless otherwise stated, please include an explana
SOLUTIONS TO HOMEWORK ASSIGNMENT 5
MATH 10A LECTURE 001, FALL 2015, CRAIG EVANS
WRITTEN BY: JASON FERGUSON
[email protected]
Beware of typos. Your solutions may be dierent from and/or better than mine.
I usually give much more thorough explanations th
HOMEWORK ASSIGNMENT 6
MATH 10A LECTURE 001, FALL 2015, CRAIG EVANS
WRITTEN BY: JASON FERGUSON
[email protected]
DUE: Thursday, September 17th in your discussion section [unless your GSI says otherwise].
Unless otherwise stated, please include an expla
Minitab Assignment #3 - Answers
Ages of FLCC Students
21
28
35
42
age
49
56
63
Question A: This graph is skewed right (meaning that the tail is longer on the right than it is on the left). There is
also an outlier at 65 years. (-2)
Descriptive Statistics:
Part a)
1.
2. Correlation Coeficcient=-0.96322, R=-0.96322 last part of equation: (-9.63217/10)= -0.96322,
p-value= <0.0001
3.
Line of best fit equation: y=-0.202x+41.655
( xiX ) ( yiY ) 555
=
2
Calculate slope:
2750
( xi X )
Calculate y-intecept: b=Y-m
1. A study was done to determine the size of the typical American family. The number
of children per family was recorded for a random sample of 45 families living in a
large urban apartment building. (36 points)
3 2 3 2 2 1 1 0 0
2 1 3 4 2 3 0 4 1
3 2 2 2