Topics in mathematics

OpenMath site online. 6 assignments+2 tests. Topics are “sets & Logic”

 
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MAT 540 Assignment – Final Help

Im great.Okay, Let me know if you are cable of doing the assignmentHere the attached documents. You will need to do A,B,C,D,E for the Mossaic Tiles, LTD Case Problem.  Problems 55&57 on the additional help sheet  May help you with the set up of the linear equation and the constraints  If you get these correct without the answer key it should help.  The set up is the main thing to get correct so that you can use solver or QM. Below are the requirements for the assignmentsAssignment 1. Linear Programming Case StudyYour instructor will assign a linear programming project for this assignment according to the following specifications.It will be a problem with at least three (3) constraints and at least two (2) decision variables. The problem will be bounded and feasible. It will also have a single optimum solution (in other words, it won’t have alternate optimal solutions). The problem will also include a component that involves sensitivity analysis and the use of the shadow price.You will be turning in two (2) deliverables, a short writeup of the project and the spreadsheet showing your work.Writeup.Your writeup should introduce your solution to the project by describing the problem. Correctly identify what type of problem this is. For example, you should note if the problem is a maximization or minimization problem, as well as identify the resources that constrain the solution. Identify each variable and explain the criteria involved in setting up the model. This should be encapsulated in one (1) or two (2) succinct paragraphs.After the introductory paragraph, write out the L.P. model for the problem. Include the objective function and all constraints, including any non-negativity constraints. Then, you should present the optimal solution, based on your work in Excel. Explain what the results mean.Finally, write a paragraph addressing the part of the problem pertaining to sensitivity analysis and shadow price.Excel.As previously noted, please set up your problem in Excel and find the solution using Solver. Clearly label the cells in your spreadsheet. You will turn in the entire spreadsheet, showing the setup of the model, and the results.

 
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Excercise & assignment (Statistics)

WEEK 5 – EXERCISESEnter your answers in the spaces provided. Save the file using your last name as the beginning of the file name (e.g., ruf_week5_exercises) and submit via “Assignments.” When appropriate, show your work. You can do the work by hand, scan/take a digital picture, and attach that file with your work.For the following question(s): A school counselor tests the level of depression in fourth graders in a particular class of 20 students. The counselor wants to know whether the kind of students in this class differs from that of fourth graders in general at her school. On the test, a score of 10 indicates severe depression, while a score of 0 indicates no depression. From reports, she is able to find out about past testing. Fourth graders at her school usually score 5 on the scale, but the variation is not known. Her sample of 20 fifth graders has a mean depression score of 4.4. Use the .01 level of significance.1.      The counselor calculates the unbiased estimate of the population’s variance to be 15. What is the variance of the distribution of means?A)  15/20 = 0.75B)   15/19 = 0.79C)   152/20 = 11.25D)  152/19 = 11.842.      Suppose the counselor tested the null hypothesis that fourth graders in this class were less depressed than those at the school generally. She figures her t score to be -.20. What decision should she make regarding the null hypothesis?A)  Reject itB)   Fail to reject itC)   Postpone any decisions until a more conclusive study could be conductedD)  There is not enough information given to make a decision3.      Suppose the standard deviation she figures (the square root of the unbiased estimate of the population variance) is .85. What is the effect size?A)  5/.85 = 5.88B)   .85/5 = .17C)   (5 – 4.4)/.85 = .71D)  .85/(5 – 4.4) = 1.42For the following question(s): Professor Juarez thinks the students in her statistics class this term are more creative than most students at this university. A previous study found that students at this university had a mean score of 35 on a standard creativity test. Professor Juarez finds that her class scores an average of 40 on this scale, with an estimated population standard deviation of 7. The standard deviation of the distribution of means comes out to 1.63.4.      What is the t score?A)  (40 – 35)/7 = .71B)   (40 – 35)/1.63 = 3.07C)   (40 – 35)/72= 5/49 = .10D)  (40 – 35)/1.632= 5/2.66 = 1.885.      What effect size did Professor Juarez find?A)  (40 – 35)/7 = .71B)   (40 – 35)/1.63 = 3.07C)   (40 – 35)/72= 5/49 = .10D)  (40 – 35)/1.632= 5/2.66 = 1.886.      If Professor Juarez had 30 students in her class, and she wanted to test her hypothesis using the 5% level of significance, what cutoff t score would she use? (You should be able to figure this out without a table because only one answer is in the correct region.)A)  304.11B)   1.699C)   -.113D)  -2.500For the following question(s): A school counselor claims that he has developed a technique to reduce prestudying procrastination in students. He has students time their procrastination for a week and uses this as a pretest (before) indicator of procrastination. Students then attend a workshop in which they are instructed to do a specific warming-up exercise for studying by focusing on a pleasant activity. For the next week, students again time their procrastination. The counselor then uses the time from this week as the posttest (after) measure.7.    Suppose the counselor wants to examine whether there is a change of any kind (either an increase or decrease) in procrastination after attending his workshop. What would be the appropriate description of “Population 2” (the population to which the population his sample represents is being compared)?A)  People whose posttest scores will be lower than their pretest scoresB)   People whose change scores will be greater than 0C)   People whose change scores will be 0D)  People whose change scores will be less than their pretest scores8.      Presume the counselor wants to examine whether there is a change (either an increase or decrease) in procrastination after attending his workshop. If the counselor tests 10 students using the .05 level of significance, what cutoff t score(s) will he use? (You should be able to figure this out without a table.)A)  -2.62, 0, +2.62B)   +2.262C)   -2.262, 0D)  -2.262, +2.2629.      Suppose the counselor found the sum of squared deviations from the mean of the sample to be 135. Given that he tested 10 people, what would be the estimated population variance?A)  135/10 = 13.5B)   135/9 = 15.0C)   10/135 = .074D)  9/135 = .06710.          A researcher conducts a study of perceptual illusions under two different lighting conditions. Twenty participants were each tested under both of the two different conditions. The experimenter reported: “The mean number of effective illusions was 6.72 under the bright conditions and 6.85 under the dimly lit conditions, a difference that was not significant, t(19) = 1.62.”Explain this result to a person who has never had a course in statistics. Be sure to use sketches of the distributions in your answer.SPSS ASSIGNMENT #5Single Sample & Dependent Samples t TestsSPSS instructions: (For more details, check the links provided under “Course Materials” in the Course Overview Folder (under Lessons).t Test for a Single Sample:Open SPSSEnter the number of activities of daily living performed by the depressed clients studied in #1 in the Data View window.In the Variable View window, change the variable name to “ADL” and set the decimals to zero.Click Analyze à Compare Means à One-Sample T test à the arrow to move “ADL” to the Variable(s) window.Enter the population mean (14) in the “Test Value” box.Click OK.t Test for Dependent Means:Open SPSSEnter the number of activities of daily living performed by the depressed clients studied in Problem 2 in the Data View window. Be sure to enter the “before therapy” scores in the first column and the “after therapy” scores in the second column.In the Variable View window, change the variable name for the first variable to “ADLPRE” and the variable name for the second variable to “ADLPOST”. Set the decimals for both variables to zero.Click Analyze à Compare Means àPaired-Samples T Test àthe arrow to move “ADLPRE” to the Paired Variable(s) window à “ADLPOST” and then click the arrow to move the variable to the Paired Variable(s) window.Click OK.Review the five steps of hypothesis testing and complete the following problems. Be sure to cut and past the appropriate result boxes from SPSS under each problem.Researches are interested in whether depressed people undergoing group therapy will perform a different number of activities of daily living after group therapy. The researchers have randomly selected 12 depressed clients to undergo a 6-week group therapy program.Use the five steps of hypothesis testing to determine whether the average number of activities of daily living (shown below) obtained after therapy is significantly different from a mean number of activities of 14 that is typical for depressed people. (Clearly indicate each step).Test the difference at the .05 level of significance and, for practice, at the .01 level (in SPSS this means you change the “confidence level” from 95% to 99%).In Step 2, show all calculations.As part of Step 5, indicate whether the behavioral scientists should recommend group therapy for all depressed people based on evaluation of the null hypothesis at both levels of significance and calculate the effect size.CLIENTAFTER THERAPYA17B15C12D21E16F18G17H14I13J15K12L19Researchers are interested in whether depressed people undergoing group therapy will perform a different number of activities of daily living before and after group therapy. The researchers have randomly selected 8 depressed clients in a 6-week group therapy program.Use the five steps of hypothesis testing to determine whether the observed differences in numbers of activities of daily living (shown below) obtained before and after therapy are statistically significant at the .05 level of significance and, for practice, at the .01 level. (Clearly indicate each step).In Step 2, show all calculations. As part of Step 5, indicate whether the researchers should recommend group therapy for all depressed people based on evaluation of the null hypothesis at both levels of significance and calculate the effect size.CLIENTBEFORE THERAPYAFTER THERAPYA1217B715C1012D1321E916F818G1417H118

 
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MAT 510 HW 1

This assignment will have you differentiating typical actions and potential modifications to improve activities, and assessing the overall impact of those improvement efforts.Recall a work task, hobby, or other activity that you perform regularly.In a Word document, name the activity and list sequentially the actions you do to complete the activity.Describe the main differences between doing your activity as you perform it regularly and any variations to those steps you would make to improve your activity.Reflect on the complexity of your list and the number of steps needed to complete the activity:Did variation affect your activity?If so, did the variation cause your activity to be easier or more difficult?

 
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Golden Ratio

Need Done ASAP !!!!

 
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Discussion Posts and Journal Entry- Decisions, Decisions!

In many ways, the material in this module deals with “real” life since uncertainty pervades almost all of our decisions. Please describe a decision you’ve had to make recently and identify the parameters that had a level of uncertainty. What was the level of uncertainty? Also, assess your level of risk taking as you moved toward a decision.Please respond to the discussion question with one original post and at least two substantial replies to other students. A substantial reply is considered a post which moves our discussion forward and deepens our understanding of the material. You may wish to post a probing question (i.e. How would your model apply in ____ context? What would happen if we changed ______?) or by adding new information (i.e. This is similar to _____ because ______). Posts which simply state “Way to go Bob!” or “I thought the same thing.” do not deepen our understanding and will not earn full credit.Journal entryBy the end of this module, you should have improved as a decision-maker. Have you? What measurable proof do you have of your improvement?This chapter also discusses risk taking. Reflect on how you might apply this material to some aspect of your life.

 
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Question Solving

I need help solving questions attached:https://we.tl/t-HyR3Lmvksz

 
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Astronomy

thank You a lot.

 
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Paper A: Application of a decision making framework to an IT-related ethical issue.

This assignment is an opportunity to explore and apply a decision making framework to an IT-related ethical issue. A framework provides a methodical and systematic approach for decision making. UMGC Module 2 – Methods of Ethical Analysis (see LEO Content – Readings for week 2) describes three structured frameworks that may be used for ethical analysis, namely Reynolds Seven-Step Approach, Kidder’s Nine Steps, and Spinello’s Seven-Step Process. There are several ways described in UMGC Module 2 to systematically approach an ethical dilemma, and while each of the frameworks described has its merits, each will result in an ethical decision if straightforwardly, objectively,  and honestly applied.In addition, consider the ethical theories described in Module 1 – Introduction to Theoretical Ethical Frameworks (see LEO Content – Readings for week 1) which help decision makers find the right balance concerning the acceptability of and justification for their actions. A separate write-up of the ethical theory that supports your decision is part of the following requirements.For this paper, the following five elements must be addressed:Describe a current IT-related ethical issue: Since this is a paper exercise, not a real-time situation,you may want to construct a brief scenariowhere this issue comes into play, and thus causes an ethical dilemma.  The dilemma may affect you, your family, your job, or your company; or it may be a matter of public policy or law that affects the general populace. See the list below for a list of suggested issues, which may be a source of ethical dilemmas.Define a concise problem statementthat isextractedfrom the above description or scenario. It is best if you define a specific problem caused by the dilemma, that needs a specific ethical decision to be made, that will solve the dilemma.   Be aware that if it is a matter of public policy or law, that it may require a regulatory body or congressional approval to take action to implement a solution.Analyze your problemusing one of the structured decision-making frameworks chosen from Module 2.Make sure that you identify the decision-making framework utilized. In addition, the steps in the decision-making framework selected must be used as major headings in the Analysis section.Consider and state the impact of the decision that you madeon an individual, an organization, stakeholders, customers suppliers, and the environment, as applicable!State and discuss the applicable ethical theoryfrom Module 1that supports your decision.Concerning your paper:Prepare a minimum 3- 5 page, double-spaced paper and submit it to the LEO Assignments Module as an attached Microsoft Word file.Use headings for each topic criteriaProvide appropriate American Psychological Association (APA) source citations for all sources you use.  In addition to critical thinking and analysis skills, your paper should reflect appropriate grammar and spelling, good organization, and proper business-writing style.Include a Cover Page with your Name, the UMGC/Name of the Class, and the Title of the Paper.For example, Kidder’s approach has nine steps, which are:Recognize that there is a moral issue.Determine the actor (whose moral issue is it?).Gather the relevant facts.Test for right-versus-wrong issues.Test for right-versus-right paradigms (what sort of dilemma is this?).Apply the resolution principles (ends-based, rule-based, or care-based).Investigate the “trilemma” options (look for common ground or compromise).Make the decision.Revisit and reflect on the decision. (Kidder, 1995, p. 183-187)Reminder:Each of the steps for whatever framework that you selectmust be a major headingin the Analysis section of your paper.Here are some suggested issues for you to consider, the additional text is designed to help you flesh out the issue:Privacy on the Web: What is happening now in terms of privacy on the Web? Think about recent abuses and improvements. Describe and evaluate Web site policies, technical and privacy policy protections, and current proposals for government regulations.Personal Data Privacy Regulations in Other Countries: Report on personal data privacy regulations, Web site privacy policies, and governmental/law enforcement about access to personal data in one or more countries; e.g., the European Union.  This is especially relevant as our global economic community expands and we are more dependent on non-US clients for e-business over the Internet.Computer-Based Crimes: Discuss the most prevalent types of computer crimes, such as Phishing. Analyze why and how these can occur. Describe protective measures that might assist in preventing or mitigating these types of crimes.Government Surveillance of the Internet: The 9/11 attacks on the US in 2001 brought many new laws and permits more government surveillance of the Internet. Is this a good idea?The Digital Divide: Does it exist; what does it look like; and, what are the ethical considerations and impact?Privacy in the Workplace – Monitoring Employee Web and E-Mail Use: What are current opinions concerning the monitoring of employee computer use. What policies are employers using? Should this practice of monitoring, be authorized or not?Medical Privacy: Who owns your medical history? What is the state of current legislation to protect your health information? Is it sufficient?  There are new incentives with federal stimulus financing for health care organizations to develop and implement digital health records.Software Piracy: How many of you have ever made an unauthorized copy of software, downloaded software or music (free or for a fee), or used copyrighted information without giving proper credit or asking permission? Was this illegal or just wrong? How is this being addressed?9. Consumer Profiling: With every purchase you make, every Web site you visit, your preferences are being profiled. What is your opinion regarding the legal authority of these organizations to collect and aggregate this data?Biometrics & Ethics: Your fingerprint, retinal-vessel image, and DNA map can exist entirely as a digital image in a computer, on a network, or in the infosphere.  What new and old ethical problems must we address?Social Networking:  What are some of the ethical issues surrounding using new social networks?  How are these now considered for business use?  What are business social communities?  Are new/different protections and security needed for these networks?Gambling in Cyberspace: Is it legal? Are there national regulations and/or licensing? What are the oversight and enforcement requirements? Are there international implications? What are the social and public health issues?Pornography in Cyberspace: For example, the U.S. Supreme Court ruling protecting as free speech computer-generated child pornographyMedicine and Psychiatry in Cyberspace: Some considerations include: privacy issues; security; third-party record-keeping; electronic medical records; access to information, even by the patient (patient rights); access to information by outsiders without patient knowledge; authority to transfer and/or share information. Are there any policies proposed by professional organizations?Counterterrorism and Information Systems: Your protection versus your rightsOpen-source Software versus Closed-source Software: Ethical ramifications and impact on intellectual property lawCreative Commons Licenses: How do they work and what are the legal and ethical impacts and concerns?Universal ID card: What is the general position of the U.S. government about issuing each individual a unique ID card? Which individual U.S. government agencies have already provided a unique ID card? What steps have been taken to include individual ID information electronically in passports? How is privacy and security provided?Video Games: Does playing video games distract from everyday responsibilities? Do video games correlate with real world violence? Why do game creators continually increase the violence of video games? What is video game addiction?Cyberbullying: What is cyberbullying and what can be done to stop it?Net Neutrality: What is the current position of the federal government and is it fair to all?

 
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Helping students

How can i help a student in solving homeworks?

 
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