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Mathematics homework help

  I need initial post and respond to two of my classmates   Modeling Population

  I need initial post and respond to two of my classmates
 
Modeling Population Growth
You can generally model population growth as either linear by an arithmetic sequence, or exponential by a geometric sequence. These can be defined by one of the general forms:
Arithmetic Sequence
an = a0 + d∙n where,
d is the common difference (change per year for population increase or decrease)
n is a natural number indicating the years since the initial period
a0 is the population in the initial period
Geometric Sequence
an = a0∙rn where,
r is the common ratio (multiple for population increase or decrease per year)
n is a natural number indicating the years since the initial period
a0 is the population in the initial period
Post 1: Initial Response
Suppose you are working as an IT consultant and are known to have keen mathematical skills in addressing real-world situations. You have recently been contacted by a city council to present a plan for a population growth/decline initiative. The council has in recent years experienced considerably unexpected changes in population due to obsolete models and no use of technology. This has left them scrambling to find remedies for the city (e.g., new roads if the population is growing, repurpose vacant lots if the population is declining).
You will spearhead this initiative, and you are charged with planning a mathematical model for future use and prioritizing the city council’s use of technology. Your goal is to apply your knowledge of sequences and create an appropriate mathematical model for the city’s population growth/decline. You will also share the technological tools that can be used to employ this model well into the future in the form of a computer algorithm.
In planning for your goal, you will want to briefly describe the city population growth/decline scenario and identify what factors might contribute to the growth/decline. This initial stage of planning is critical in creating an accurate mathematical model. You also want to present how your model can be codified as a computer algorithm so that the council’s staff can use it in the future.
publish a detailed response to the council to demonstrate what you propose for more effectively modeling and preparing for population changes in the future.
View Unit 5 Discussion Post 1 example.
Include all of the following in your response.
Provide a narrative introduction to the planning initiative, where you:

Briefly describe the situation in which population growth/decline is being considered and modeled
State whether you project the population growth/decline to be linear or geometric in nature
Identify at least three factors you believe might be contributing to the unexpected population growth/decline (i.e., birth, disease, innovations, trends, migration)
Discuss and prioritize which of these factors you believe has possibly had the greatest impact on the population growth/decline
Reflect on how that factor may relate to one of the inputs in the model

Present your proposed mathematical model for how the council estimates the future population each year, using either an arithmetic or a geometric sequence. Clearly state the following:

Initial population size, a0
Your change variable, d or r
The general equation for your model with these two inputs substituted into the formula

Write an algorithm that will take as input the number of years (n) since the initial period, and that will output the population size for each year from now until the nth year. Your algorithm must use an iterative operation (such as a while or for-next loop).
Post 2: Reply to a Classmate
Review a classmate’s population model scenario, equation, and algorithm. If no other classmate has yet responded, review their model for accuracy by providing an input value for n ≥ 5 and perform a trace of the algorithm.
View Unit 5 Discussion Post 2 example.
Address the following:
Write out the outputs in a trace table.
Select two future population estimates (two output values of an) and discuss whether the output produced is appropriate for the scenario. What limitations, or problems, may there be in using this model to estimate the population indefinitely?
Based on your assessment of the output and potential limitations of the model, suggest a change to the general formula or algorithm for their sequence to represent a potentially better long-term model for the scenario. (You may consider the factors that were described in the initial planning phase or other biological limitations on growth/decline of populations.)
Post 3: Reply to Another Classmate
Review a different classmate’s population model scenario, equation, and algorithm. You will improve their model to account for a potential event that could affect the population growth/decline.
Modify your classmate’s population model by adjusting their algorithm with a conditional statement (if-then or if-then-else) for some event that leads the population to slow its growth or decline (or reverse between growth versus decline) at a specific population size (i.e., you choose a specific value of an).
View Unit 5 Discussion Post 3 example.
Address the following:
Copy their original algorithm into your post and insert a conditional operation into an appropriate place to account for this change in the model. (You will need to incorporate a second formula with an updated value for d or r, for use when your conditional operation begins taking effect.)
Select an input value for n, large enough so that it will trigger your conditional statement to calculate some population estimates using your revised model, or second formula.
Perform a trace of the algorithm using this value of n and write out the outputs in a trace table.
Describe and explain the results, commenting specifically in your role as a consultant on how you believe this is now a good long-term modeling algorithm for the scenario.

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Mathematics homework help

 I need initial post and 2 responses to my classmates, see attached for my class

 I need initial post and 2 responses to my classmates, see attached for my classmates’ initial responses.
Set Theory as a Framework for Relational Databases
A set can be a collection of any type of object, ranging from people to places to things. Basic set theory includes the study of subsets, proper subsets, finite and infinite sets, and the logical operations on them. Set theory plays a foundational role in mathematical processes and ideas and also has connections to computer engineering, programming, and databases.
The relational database model, originally invented by computer scientist Edgar F. Codd in 1969, is based on ideas from set theory. A simple database is a collection of records stored in tables. A relational database also includes relationships stored across multiple tables. One can run queries on the relational database to request specific information with set theory operators, such as union and intersection.
Post 1: Initial Response
Imagine you are responsible for your organization’s analytic tasks, and you are currently brainstorming how to query a relational database of marketing information for the organization. You want to test your understanding of how you might relate the database tables with the use of set theory, and particularly subsets. To carry out your test, complete each of the following:
To define two sets, set A and set B, first conduct an online browsing trial, in which you spend 10–20 minutes looking at different websites, such as for national news, social media, sports, hobbies, recipes, etc. Let set A represent exactly three distinct company names from any online advertisements you saw during your browsing trial. Let set B represent at least three distinct company names for any online retailers you have purchased from in the past year.
To prepare to use your algorithm, answer the following questions:

How many elements are in set A? This is what you will set as m = ___.
How many elements are in set B? This is what you will set as n = ___.
What are your first and last elements of A? Show these as a[1] = ____ and a[m] = ___.*
What are your first and last elements of B? Show these as b[1] = ____ and b[n] = ___.*

*Note: Recognize that there are other elements you will cycle through as you trace the algorithm. While you are not required to list all elements in this form, you will need to use them, in addition to the first and last elements, as you complete your trace.
Using your sets A and B along with what you just outlined to prepare, determine an algorithm that you can use to see whether A ⊆ B.
State the algorithm that you would use to compare these sets.
Based on your algorithm, did you find that A ⊆ B or that A ⊈ B? Explain. If A ⊈ B, how are they related (e.g., disjoint, intersecting)?
View Unit 6 Discussion Post 1 example.
Post 2: Reply to a Classmate
Now you want to try out the algorithm on another person’s data to further test your understanding and bolster your confidence about assessing relations computationally as you approach this relational database project.
Review a classmate’s post and consider their set B. Address the following items completely.
Using your set A and their set B determine whether A ⊆ B or that A ⊈ B? Explain how you know this. If A ⊈ B, how are they related (e.g., disjoint, intersecting)?
How might the understanding you have gained from your Post 1 and Post 2 tests be useful if you were responsible for querying a relational database?
View Unit 6 Discussion Post 2 example.
Post 3: Reply to Another Classmate
After conducting this computational practice, you have begun to develop some technical insight into how you might investigate and seek information on the marketing habits of clients by querying a relational database. However, you know your fellow staff members are not interested in this technical insight. So, for your general meeting, you plan to present a visual synopsis of some ideas considered in the planning stages of this project.
Review another classmate’s post and consider their sets A and B. Address the following items completely.
Create a Venn diagram that models all of the elements in your classmate’s sets A and B. Carefully place elements appropriately in the intersecting versus non-intersecting areas representing sets A and B, respectively. You may use the software of your choice for the Venn diagram (e.g., creatly.com, cosketch.com, Microsoft® Word®, or PowerPoint®). Copy and paste the image or screenshot of your Venn diagram into your post. (You may also use an attached file if needed.)
publish some talking points in anticipation of addressing the following questions during your presentation:

How do these two sets relate in the example illustrated by the Venn diagram?
How have the concepts of sets and set operations been utilized in your analytic tasks?
How might table relationships be modeled from the ideas of set theory?

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Mathematics homework help

 Please respond to the following: Explain why an increase in sample size will

 Please respond to the following:
Explain why an increase in sample size will reduce the probability of a type II error, but such an increase will not impact the probability of a type I error.
Support your reasoning using a scholarly source. 
Be sure to respond to at least one of your classmates’ posts. Cite any resources used.

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Mathematics homework help

 Please respond to the following: Explain why an increase in sample size will

 Please respond to the following:
Explain why an increase in sample size will reduce the probability of a type II error, but such an increase will not impact the probability of a type I error.
Support your reasoning using a scholarly source. 
Be sure to respond to at least one of your classmates’ posts. Cite any resources used.

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Mathematics homework help

  Applications of Counting Techniques In this unit, you have seen the difference

 
Applications of Counting Techniques
In this unit, you have seen the differences between combinations and permutations as well as how to calculate the results for each type of counting application. For example, say you would like to form a focus group on improving your software with individuals who took an initial survey. How many different three-person focus groups can be formed from the 20 people who originally took the survey? (Combination problem)
If you want your three-person focus group to have one person serve as the spokesperson for the group, one person as the notetaker, and one person as the timekeeper, how many different focus groups can you form with these three positions, drawing from the total group of 20 people? (Permutation problem)
Post 1: Initial Response
Compose a counting question that applies either the combination or permutation formula (i.e., focus the development of your question to draw upon one of these two counting techniques, specifically). Please include the following information:
Provide a description of the situation, including how many people or items you may select from in total (n) and how many will make up the outcome (r).
Clearly state the counting question which can be addressed based on this situation.
Identify the counting technique required to answer the question and show the steps for determining the solution.
Express the solution in a complete, narrative sentence, tying in some of the original context from the situation you described above to clearly communicate your result.

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Mathematics homework help

  Module 3 Assignment: Draft of Description Paragraph Due: Sun Dec 11, 2022 11:5

 
Module 3 Assignment: Draft of Description Paragraph
Due: Sun Dec 11, 2022 11:59pmDue: Sun Dec 11, 2022 11:59pmungradedAttemptIN PROGRESSNext Up: Submit AssignmentAdd CommentUnlimited Attempts AllowedDetails
Module 3Draft of Description Paragraph
Assignment
This is a mandatory assignment that is graded Complete/Incomplete in order for the instructor to provide feedback about key requirements before final submission.
For this assignment, you will submit a draft of your description paragraph.
Your double-spaced paragraph should contain:
approximately 200-250 words,
a well-developed topic sentence,
adequate detail to support the topic sentence,
the use of the different senses of seeing, smelling, hearing, touching, and tasting, and
a concluding statement that ties the details together.
Instructions
Type your paragraph in a Word document (DOC or DOCX) or in a text document (TXT) and submit it as an assignment. Reminder: Your description paragraph should be double-spaced, and it must be approximately 200 to 250 words.
Save your assignment using a naming convention that includes your first and last name and the activity number (or description). Do not add punctuation or special characters.

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Mathematics homework help

Problem 1.  Coal gas is produced at a gasworks. Pollutants in the gas are remove

Problem 1.
 Coal gas is produced at a gasworks. Pollutants in the gas are removed by scrubbers, which become less and less efficient as time goes on. The following measurements, made at the start of each month, show the rate at which pollutants are escaping (in tons/month) in the gas:
Time (months)0123456Rate (tons/month)36915223038
A. Make an overestimate and an underestimate of the total quantity of pollutants that escape during the first month.
overestimate = 
functionsequation editor tons
underestimate = functionsequation editor tons
B. Make an overestimate and an underestimate of the total quantity of pollutants that escape for the whole six months for which we have data.
overestimate = 
functionsequation editor
underestimate = functionsequation editor
Note:  You can earn partial credit on this problem.
Problem 2.
 A population of cattle is increasing at a rate of 800+70????800+70t per year, where ????t is measured in years. By how much does the population increase between the 8th and the 13th years?
Total Increase = 
functionsequation editor
Problem 3.
The following table gives the approximate amount of emissions, ????E, of nitrogen oxides in millions of metric tons per year in the US. Let ????t be the number of years since 1940 and ????=????(????)E=f(t). 
194019501960197019801990????t01020304050????E7.48.912.618.62119.2
Estimate the integral: ∫500????(????)????????≈∫050f(t)dt≈ 
functionsequation editor
Note: Be sure that you know what the units of your answer are, and what its meaning is.
(Original data from the Statistical Abstract of the US, 1992)
Problem 4.
Estimate the area under the graph of ????(????)=????2+4????f(x)=x2+4x from ????=3x=3 to ????=9x=9 using the areas of 33 rectangles of equal width, with heights of the rectangles determined by the height of the curve at
(a) left endpoints
ANSWER: 
functionsequation editor
(b) right endpoints
ANSWER: 
functionsequation editor
Note:  You can earn partial credit on this problem.
SAVE and preview answers
Problem 5.
Without using a calculator evaluate the definite integral.
∫62(7????2−9????+8)????????=∫26(7×2−9x+8)dx= 
functionsequation editor .
Problem 6
∫151????(????)????????−∫91????(????)????????=∫????????????(????)????????∫115f(x)dx−∫19f(x)dx=∫abf(x)dx
where ????=a= 
functionsequation editor   and   ????=b= functionsequation editor .
Note:  You can earn partial credit on this problem.

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Mathematics homework help

Laboratory Math Solutions – Assignment #4 1. You need to prepare 150mL of a 3.5%

Laboratory Math Solutions – Assignment #4
1. You need to prepare 150mL of a 3.5% solution of NaCl and distilled water.
a. How much NaCl would you use?
b. How much water would you use?
2. How would you prepare 600mL of a 4% alcohol solution from a 20% alcohol solution?
3. If your procedure tells states to add 15g of BSA to 150mL of water to prepare the reagent. How much BSA would you need to prepare 650mL of the reagent.
4. You need to prepare a 5mg/dL NaCL solution. If you need 300mL of this solution, how much NaCl do you need to mix with 300mL of solvent?
5. If you use 4g of sucrose to make a 2.5% (mass/volume) solution. What is the volume of solution you made?
Name___________________________
____/5

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Please include an estimation (prediction), reflection and an extension.

Competency Task: 
In the game of Tic Tac Toe, there are 8 distinct winning lines.  
Investigate how many distinct winning lines there are in a game played on a 3 by 3 by 3 board, with 27 cells. 
Note:
Please Include an estimation (prediction), reflection and an extension. Please view the example work for further reference. I have also attached the rubric cube. 

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Mathematics homework help

O profitability ratios (roe, roa, total margin, operating margin)

 Write a 4-6 page paper in which you discuss the value of ratio analysis in decision making for health care organizations. Complete the following in your paper:
o Discuss the meaning of ratio analysis in healthcare.
o Pick only one (1) ratio from EACH major group from the financial statements. (e.g. Current ratio,
ROE, Debt to equity, ALOS)
 Major Groups: o
o Liquidity ratios (Current ratio, Days Cash-on-Hand, Quick Ratio)
o Profitability ratios (ROE, ROA, Total Margin, Operating Margin)
o Leverage/Capital Structure Ratios (Debt ratio, Equity ratio, Debt to Equity Ratio)
o Nonfinancial Ratios (Occupancy rate, payer mix, ALOS, Expense per discharge, FTE per bed, HMO penetration)
o Discuss one (1) ratio (from EACH major group) using the following criteria:
o What is the meaning of each ratio?
o Evaluate the meaning of the ratio related to the financial health of the health care organization. Show the calculations.
o Explain the factors that affect the results related to the financial health of the organization.
You can also utilize the sample Help4UHMO Organization financial statements (located under week 6) or a real-life health care organization to evaluate by researching their financial statements. Show relevant calculations.
  Format your paper consistent with APA guidelines.
  Provide a minimum of two (2) cited sources in your paper. Properly cite in APA format