Mathematics Homework Help

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EGN 3443 USF Probability and Statistics Question

 

Learning Objectives

In this assignment you will:

  • Read, analyze, and argue with data – Using the provided descriptive statistics (the Tables), you will learn to read tables to understand what they are saying, and determine which information you can use from them to support your message.
  • Critical thinking & problem-solving – You will review sources from the literature to identify the use of statistics in your field.
  • Communication – You will present a clear message to the specific assigned audience. Your message will in part be based on integrating the appropriate content from the assigned descriptive statistics.

Required Reading/Viewing

  • first module. You may also work with the Writing Studio to get assistance with your writing. The UNC Writing Center provides many good online resources.

(Links to an external site.)

Extra Credit Support (this reading is provided for those wishing to complete the extra credit part of the assignment)

Assignment Description

For this assignment, you will create a handout for freshmen in your field. The purpose is to persuade them that the competencies they will gain from the required Probability and Statistics course is essential to their professional future.

Deliverable: A minimum 700-word handout using the appropriate template, provided below. The reference list does not count as part of the word count.

Completing the Assignment

Complete and Synthesize Research

For this assignment, you will have two types of input information, a literature review, and descriptive statistical data.

Literature Review. Complete research on the use of probability and statistics in your field. There are sources to get you started for each field on the ‘Role of Probability and Statistics in the Work of Your Field’ page. Each field (your Department) will vary in the use of statistics, but some of the things you may what to find information on include:

  • The purpose of using statistics in your field. By this I mean, what does it accomplish?
  • What type of input into the work of your field statistics provides. By this, I mean is it used for defining problems, evaluating systems and products, and/or creating products and tools. Some of these may be general aspects of work and some may be specific product types.

Connecting to the USF Library from off-campus. (Links to an external site.) Connecting to the Library from off-campus requires a few specific steps that allow the Library systems to see you as a student, and allow you full access to USF Library resources. If you do not complete these steps you will not have access to the materials you will need. Please review the hyperlinked library skills guide.

Data. Review the data provided in the articles linked below and determine:

  • What do the data suggest? To really understand these Tables, read their headers, and their footnotes. If there are terms you do not understand, look them up.
  • What part or parts of these data can you use to help convey your handout message? To do this read what is being presented and ask yourself which of the competencies they’ve presented are going to be useful for convincing freshmen that probability and statistics are important. You are required to incorporate and cite some of these data in some way in your document. You will have these sources to work from for this part of your document:

The Four Career Competencies Employers Value Most (Links to an external site.)by NACE Staff

Are College Graduates “Career Ready”? (Links to an external site.) by NACE Staff

Use the article What is Career Readiness? (Links to an external site.) By NACE Staff. On this webpage, you will find about a paragraph into the ‘Career Readiness Competencies’ section hyperlinks to a description of each of the career readiness competencies. Review them to assist you in determining which ones are competencies you will improve with the work in this course.

Compose Content

See the hyperlinks below for links to the templates to be used for the document you will create for this assignment. If you do not like the image I created for your field, you may change it, as long as you adjust the text and footer bar colors to match your new image.

Writing a professional document.

Organization – a professional document must be organized clearly and consistently.
Flow – your writing must connect one idea to the next throughout the document.
Paragraphs and sentences – You will write this document in paragraphs, using full sentences.
Language – Use precise language, stating exactly what you are talking about. Do not use slang, shortened forms of words, or figures of speech. Acronyms may only be used after first spelling out the words with the initials behind it in parenthesis after the words.
Grammar and punctuation – Use grammar editing tools to assure that your grammar and punctuation are correct. This is a necessary professional habit. You will lose points if the grader has to struggle to understand what you are saying.
No quotations and NO plagiarism – They are not acceptable practices in professional engineering writing to use direct quotations. The words in your document must represent your own thinking, based on the information you have gathered. Citing credible sources from which you got ideas gives you credibility and it is required in this work. If you are unclear on plagiarism or are from a region of the world that may think about it differently, review the Plagiarism page.

Document Audience, Purpose, and Elements

Your document is to persuade incoming freshmen in your field as to the importance of Probability and Statistics to your field (the Department you are studying in). The linked exemplar provides an example of content and the required appearance of the document. The tone of this is to be professional, but accessible. Your writing on the page should flow from one section to the next, BUT it should look accessible, with breaks between paragraphs and headings, so it is not an overwhelming wall of text. You will include the following headings/subheadings:

  • A Document Title. Document titles must briefly and precisely indicate the topic of the document. Ideally, it is also something that will catch the readers’ attention.
  • Introduction. As with any professional document, the beginning of the document needs to provide readers with an overview of why this is important to them and what it will address. This document will do two things – 1) it will discuss the ways in which probability and statistics are used in your field, and 2) it will use data to support the argument that this is important for student goals in attending college. Both of these aspects should be addressed in the introduction.
  • The Use of Statistics in [your field]. Be sure that you have enough information to complete this section. You can look for additional sources to provide specific examples of probability and statistics applications. Each field will vary in the use of statistics but some of the things you may what to find information on include:
    • The purpose of using statistics in your field. By this I mean, what does it accomplish?
    • What type of input into the work of your field statistics provides? By this, I mean aspects of work such as defining problems, evaluating systems and products, and creating products and tools. If you have clearly dividable topics (such as ways probability and statistics are used,) use sub-headings to divide the sections.
    • In-text citations are required in this section. No direct quotations are allowed, and the work must be in your own words.
  • Probability and Statistics Literacy will Enhance Your Employability. In this section, you will include a discussion of the relevant parts of the data you reviewed above to indicate to students how literacy in probability and statistics is important for their ability to get a job. In-text citations are required in this section. No direct quotations are allowed, and the work must be in your own words.

Extra Credit Option (5 points) For extra credit you may include a presentation of the relevant part(s) of the data set(s) we reviewed for this assignment. It cannot be a copy of the tables, or a table of any type. You will need to generate a different type of graphical presentation of the data that you think will be clear, readable, and interesting to students.

  • Conclusion. In this section, you summarize what you discussed about the use of probability and statistics in your field, and how having this competency will enhance students’ employability when they graduate.
  • Reference List. The document will end with an APA formatted reference list (Links to an external site.). Only include items on the reference list for which you have made an APA in-text citation (Links to an external site.) in your document. However, the required reading for your field/Department must be included. Citations are required any place in your document where you have used the ideas, data, or images of others requires an in-text citation. You may not quote your sources, you must develop your own words.

Revising and editing, and proofreading: Professional documents must be readable, clear, well organized, and concise. They must also be free of errors. Two approaches may help you with finding typos and grammar and word errors. First, read your work out loud to yourself after having stepped away from it for a while (at least a day). Doing this will help you catch wording errors or omissions and poorly constructed sentences. Second, you should use advanced grammar-checking software to review for grammar, punctuation, or other writing errors. The base paid platform of Grammarly is one option; however, others are available as well.

Document Format

Use the template provided for the field (Department) you are in. You may opt to change the header image if you do not like the one I selected, but it must fill the space as the current one does. If you change it you must also change the title font color and bar at the bottom to match the colors in the new header.

Biomedical and Chemical Engineering Template download

Civil Engineering Template download

Computer Engineering, Computer Science, and Electrical Engineering Template download

Industrial and Mechanical Engineering Template

Mathematics Homework Help

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Tidewater Community College Set Theory Basics Questions

 

I’m working on a mathematics question and need an explanation and answer to help me learn.

2. Let S = {1,2,3,…,18,19,20} be the universal set.

Let sets A and B be subsets of S, where:

Set A={1,2,12,13,14,16,17,18}A={1,2,12,13,14,16,17,18}

Set B={2,3,4,6,7,13,15,16,17,19,20}B={2,3,4,6,7,13,15,16,17,19,20}

LIST the elements in Set A and Set B: { }

LIST the elements in Set A or Set B: { }

Enter the elements as a list, separated by commas. If the result is the empty set, enter DNE

You may want to draw a Venn Diagram to help answer this question.

3.Let U={1,2,3,…,10}, A=A={1,3,5,7}, B=B={1,2,3,4}, and C=C={3,4,6,7,9}.

Select Ac

Ac from the choices below.



4. Let SS be the universal set, where:
S={1,2,3,…,18,19,20}S={1,2,3,…,18,19,20}
Let sets AA and BB be subsets of SS, where:

Set A={1,3,6,7,8,11,12,14,16,17,19,20}

A={1,3,6,7,8,11,12,14,16,17,19,20}

Set B={1,2,3,5,6,7,13,18}

B={1,2,3,5,6,7,13,18}

Find the following:

LIST the elements in the set (A∪B

A∪B):
(A∪B)(A∪B) = { }
Enter the elements as a list, separated by commas. If the result is the empty set, enter DNE

LIST the elements in the set (A∩B

A∩B):
(A∩B)(A∩B) = { }
Enter the elements as a list, separated by commas. If the result is the empty set, enter DNE

You may want to draw a Venn Diagram to help answer this question.


5.Let S={1,2,3,4,5,6,7,8,9,10}S={1,2,3,4,5,6,7,8,9,10} be the universal set.

Let sets A

A, BB, and CC be subsets of SS, where:

Set A={1,5,7,9,10}

A={1,5,7,9,10}

Set B={1,3,10}

B={1,3,10}

Set C={3,4,6,9}

C={3,4,6,9}

LIST the elements in the set A∩B∩C

A∩B∩C:
A∩B∩CA∩B∩C = { }

LIST the elements in the set A∪B∪C

A∪B∪C:
A∪B∪CA∪B∪C = { }

Enter the elements as a list, separated by commas. If the result is the empty set, enter DNE




6.Suppose you have 14 tubes of paint. How many distinct color groupings can you make with your paint?



7.Let UU be the universal set, where:
U={a,b,c,d,e,f,g,h}U={a,b,c,d,e,f,g,h}
Let sets AA, BB, and CC be subsets of UU, where:

A={a,c,e,f,g}

A={a,c,e,f,g}

B={a,b,c,f,g,h}

B={a,b,c,f,g,h}

C={a,c,d,f}

C={a,c,d,f}

Complete a Venn diagram for the sets and then answer the question following.

ABCU[Graphs generated by this script: initPicture(-6.5,6.5,-5.5,5.5);circle([0,-1.7],3);circle([2,2],3);circle([-2,2],3);fontbackground=’white’;text([-4.5,4.5],’A’);text([4.5,4.5],’B’);text([-2.2,-4.5],’C’);text([6.2,5],’U’);]

List the elements in the set (A∩C)′∪(B∩A)′

}
Enter the elements as a list, separated by commas. If the result is the empty set, enter DNE

8.The Venn diagram below shows the number of people in a room labeled with their like of cats and/or dogs.

Cats

Dogs

12

5

13

16

How many people like cats?
How many people don’t like cats?
How many people like dogs?
How many people don’t like dogs?
How many people like cats and dogs?
How many people like dogs but not cats?
How many people are in the room?

9.A survey asks “What beverage do you drink in the morning”, and offers choices:

– Tea only
– Coffee only
– Both coffee and tea
– Neither coffee nor tea

The results are presented in the following Venn Diagram.

10

32

20

33

How many people drink only tea in the morning? people

How many people drink tea in the morning?

people

How many people do not drink tea?

people

How many people were surveyed?

people

Mathematics Homework Help

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University of Florida Applied Statistics Questions

 

  1. A random sample of 5 year old children is evaluated for being left- or right-handed. The sample size is n = 100 children of which 79 are right-handed, 15 are left-handed, and 6 use both hands equally. According to genetic analyses, the expression of the dominant gene for handedness is highly correlated with actual handedness. Test the following hypothesis based on the sample given above at a significance level of α = 0.05. (5 marks)

    H0: p1= p2= p3= 0.33;

    H1: at least two of the probabilities are not the same

  2. The distribution of grades for various classes taught by different professors is given in the following table. Test the null hypothesis that the grade distributions are homogenous for these three professors at a significance level of α = 0.05. (11 marks)

Professor

Grade

Einstein

Rutherford

Bohr

A

18

36

20

B

25

44

15

C

85

73

82

D

17

12

8
  1. Define in your own words the following words: (4 marks)
    1. Sensitivity
    2. Specificity
    3. Accuracy
    4. Test of homogeneity
  2. Determine the sensitivity, specificity, and accuracy for the following analytical test data that detected the presence of morphine using the Marquis test. (5 marks)
Expected results
positive condition negative condition
Actual morphine presence positive outcome 15 2
negative outcome 4 23

Would you conclude that the test is able to detect both true positive and true negative samples? Provide support for your answer.

After further consideration, the calculations will also need to be adjusted based on the correction. n21 and n12 need to be reversed as well when you adjust for the wrong location of the FP and FN notation.

I do apologize for this confusion and I will be extending the due date for Module 7 by a few days to allow time to adjust your assignment, if you desire. Please let me know if you have any questions.

Attached is a Word doc with a corrected chart that I hope will clarify things. I have seen many examples online where the values in the chart ore flipped, so you really have to be careful where the “actual” and “expected” or “predicted” words are located – rows or columns. In my research, I’ve found that this chart is, ironically, also called a “confusion” chart!

Keep in mind when looking at these charts that Actual is truth, Predicted (or Expected) is the test outcome. If you have a known positive that tests negative, this is a false negative. Conversely if you have a known negative that tests positive, this is a false positive.

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MATH 111 Embry Riddle Aeronautical University Week 7 Algebra Discussion

 

Examine the following incorrect relationships and find the mistake in the work on the right side of the FIRST equal sign.

  • 8 −3= 5x8x−3=x5
  • ( 5−2)−3= −156(x5−2)−3=x−156
  • 16−14=−416−14=−4
  • 9+81‾‾‾‾‾‾√=3+9=129+81=3+9=12

Post an explanation of why each one is incorrect and then write the expression correctly

  • Where are the errors in the proposed corrections (mine or classmates’)?
  • Which solution is correct? How do you know?
  • Have we each given thorough explanations for ou

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SU Multiple and Linear Regression for Amazon Net Income Analysis

 

First part: Linear Regression Analysis

Terry Downes owns a commercial cleaning company. He has conducted a survey of customers to determine how satisfied they are with the work performed. He devised a 100-point rating scale—with 0 being poor and 100 being excellent service, selected a random sample of 14 customers, and asked them to rate the service. He also recorded the number of worker hours spent in the customer’s facility. These are in the file named Downes. 

Use Excel to complete the following:

  1. Develop a scatter plot showing the variables, rate of service and worker hours, with the y variable on the vertical axis and the x variable on the horizontal axis, and indicating the type of relationship. 
  2. Develop a linear regression model to explain the variation in the service rating.

Use Word to complete the following:

  1. Describe the model, showing the results of the pertinent hypothesis tests, using a significance level of 0.10.
  2. Submit your work in a Word document and attach your Excel file. 

second part: Multiple Regression Analysis 

Amazon.com has become one of the most successful online merchants. Two measures of its success are sales and net income/loss figures. The data can be found in the file, Amazon.

Use Excel to complete the following:

  1. Construct a scatter plot for Amazon’s net income/loss and sales figures for the period 1995–2015.  
  2. Determine a polynomial model, including its order (or degree), for Amazon’s net income/loss and sales figures. 

Use Word to complete the following:

  1. Explain your process of determining the polynomial model

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Texas A&M University Kingsville Correlation and Regression Discussion

 

  1. Let’s discuss the difference between positive association and negative association when describing the relationship between two variables. What do we mean by the least-square criterion? Give a general description of how the least-square criterion is involve in the construction of the least-square line.  Why do we say the least-squares line is the “best-fitting” line for the data set?
  2. Use the Internet and find a magazine or journal article in your field of major interest wherein the content of this chapter (Correlation and Regression – chapter 6) could be applied.  List the variables used, method of data collection, and the general type of information and conclusion drawn.

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Dallas Baptist University Concavity and Curve Sketching Calculus Questions

 

4.4 Concavity and Curve Sketching due Mon 08/02

4.5 Indeterminate Forms and L’Hospital’s Rule due Mon 08/02

4.6 Applied Optimization due Mon 08/02

4.7 Newton’s Method due Mon 08/02

4.8 Antiderivatives due Mon 08/02

5.1 Area and Estimating with Finite Sums due Mon 08/02

5.2 Sigma Notation and Limits of Finite Sums due Mon 08/02

5.3 The Definite Integral due Mon 08/02

5.4 The Fundamental Theorem of Calculus due Mon 08/02

5.5 Indefinite Integrals and the Substitution Method due Thu 08/05

5.6 Definite Integral Substitutions and the Area Between Curves due

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University of California Los Angeles Differential Equation Exercises

 

Exercise 1

(a) Is there a 2-dimensional ODE system

x_ =

y_ =

such that the origin is a Lyapunov stable but not attracting xed point?

If yes, please provide an example and draw the phase portrait. If not, please

explain why.

(b) Is there a 2-dimensional ODE system

x_ =

y_ =

with a closed orbit and single xed point, which is a saddle point?

If yes, please provide an example and draw the phase portrait. If not, please

explain why.

Exercise 2

Consider the dierential equation

x = x2 .. 11x + 10

(a) Write the dierential equation as a rst order ODE system.

(b) Calculate all xed points and classify them using linear stability analysis.

(c) Find a conserved quantity for the dierential equation. Show that your quantity

is indeed preserved.

Classify the xed points of the non-linear ODE.

(d) Draw a plausible phase portrait. Indicate the stable and unstable manifolds.

Exercise 3

Show that the dierential equation

x_ = 4x .. 2×5 + 2y .. 4x3y2;

y_ = ..2x + 4y .. 4x4y .. 2y5

has a closed orbit. You may use that the origin is the only xed point.

Exercise 4

Use the function

L(x; y) = xn + ay2;

for appropriate choices of a > 0 and n 2 N, to show that the origin is the unique xed

point of the dierential equation

x_ = 3y 3×3 3xy2;

y_ = x y3 x2y:

Deduce the stability type of the origin.

Exercise 5

For 2 R consider the dierential equation

r_ = r(r 1 + cos )

_ = sin 2

(a) Draw the phase portrait for = 0:

Remark. You do not need to compute the linearization at the xed points.

(b) Is there a closed orbit that encloses the origin? Please explain.

6

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Calculus 3 Greens Theorem and the Divergence Theorem Problems & Solutions

 

Show all formulas used and use correct notation in your work. I need help with these questions that are from chapter 14.4 – 14.7, must know these subjects ( Flow Flux, Green’s Theorem and the Divergence Theorem,  Parametrized Surfaces and Surface Area, Surface Integrals, and The Divergence Theorem and Stoke’s Theorem.

http://www.apexcalculus.com/downloadsdownload APEX Calculus 3 (Chapters 9 – 14) in Black and White