Category: Applied Mathematics

The excel file that contains mortality information from a nursing home during the year 2015. The variable “died” indicates that if the patient died before the end of the year. Given this data, develop a logistic regression model, which predicts probability of death of a guest during any year by the end of that year, given the age and the dummy variable “gender.”
The personnel director of a firm has developed two tests to help determine whether potential employees would perform successfully in a particular position. To help estimate the usefulness of the tests, the director gives both tests to 43 employees that currently hold the position. Table 5 gives the scores of each employee on both tests and indicates whether the employee is currently performing successfully or unsuccessfully in the position. If the employee is performing successfully, we set the dummy variable Group is set equal to 1; if the employee is performing unsuccessfully, we set Group equal to 0. Let x1 and x2 denote the scores of a potential employee on tests 1 and 2.
Perform a discriminant analysis on the data and interpret the result, including the confusion matrix. Include all required steps in assessing the final model. By trial and error, find the threshold, which minimizes prediction relative error.
Table 5
Results on the Tests Taken by Employees
Group
Test
Test 2
1
96
85
1
96
88
1
91
81
1
95
78
1
92
85
1
93
87
1
98
84
1
92
82
1
97
89
1
95
96
1
99
93
1
89
90
1
94
90
1
92
94
1
94
84
1
90
92
1
91
70
1
90
81
1
86
81
1
90
76
1
91
79
1
88
83
1
87
82
0
93
74
0
90
84
0
91
81
0
91
78
0
88
78
0
86
86
0
79
81
0
83
84
0
79
77
0
88
75
0
81
85
0
85
83
0
82
72
0
82
81
0
81
77
0
86
76
0
81
84
0
85
78
0
83
77
0
81
71

The excel file that contains mortality information from a nursing home during the year 2015. The variable “died” indicates that if the patient died before the end of the year. Given this data, develop a logistic regression model, which predicts probability of death of a guest during any year by the end of that year, given the age and the dummy variable “gender.”
The personnel director of a firm has developed two tests to help determine whether potential employees would perform successfully in a particular position. To help estimate the usefulness of the tests, the director gives both tests to 43 employees that currently hold the position. Table 5 gives the scores of each employee on both tests and indicates whether the employee is currently performing successfully or unsuccessfully in the position. If the employee is performing successfully, we set the dummy variable Group is set equal to 1; if the employee is performing unsuccessfully, we set Group equal to 0. Let x1 and x2 denote the scores of a potential employee on tests 1 and 2.
Perform a discriminant analysis on the data and interpret the result, including the confusion matrix. Include all required steps in assessing the final model. By trial and error, find the threshold, which minimizes prediction relative error.
Table 5
Results on the Tests Taken by Employees
Group
Test
Test 2
1
96
85
1
96
88
1
91
81
1
95
78
1
92
85
1
93
87
1
98
84
1
92
82
1
97
89
1
95
96
1
99
93
1
89
90
1
94
90
1
92
94
1
94
84
1
90
92
1
91
70
1
90
81
1
86
81
1
90
76
1
91
79
1
88
83
1
87
82
0
93
74
0
90
84
0
91
81
0
91
78
0
88
78
0
86
86
0
79
81
0
83
84
0
79
77
0
88
75
0
81
85
0
85
83
0
82
72
0
82
81
0
81
77
0
86
76
0
81
84
0
85
78
0
83
77
0
81
71
Please write this in APA style thank you.

part 1
Infographic Assignment
How do you interpret the effect of significant coefficients?
How are the distribution of the observed residuals of the constructed model tested for normality?
How can the regression model be used for prediction?
Visually communicate your responses to the questions above by developing an infographic.
part 2
Multiple Regression Activity
Although natural gas is currently inexpensive and nuclear power currently (and perhaps deservedly) does not have a good reputation, it is possible that more nuclear power plants will be constructed in the future. Table 4 presents data concerning the construction costs of light water reactor (LWR) nuclear power plants. The dependent variable, C, construction cost, is expressed in millions of dollars, adjusted to a 1976 base. Preliminary analysis of the data and economic theory indicate that variation in cost increases as cost increases. This suggests transforming cost by taking its natural logarithm.
S Power plant capacity in MWe
N Cumulative number of power plants built by the contractor
Build a multiple regression model to predict ln(C) by taking S and N or their natural logarithms as the independent variables. Make sure to check for multicollinearity.
Use residual analysis and R2 to check your model.
State which variables are important in predicting the cost of constructing an LWR plant, and
State a prediction equation that can be used to predict ln(C).
Table 4
Data Concerning Construction of Light Water Reactors
Plant
C
S
N
1
460.05
687
14
2
452.99
1,065
1
3
443.22
1,065
1
4
652.32
1,065
12
5
642.23
1,065
12
6
345.39
514
3
7
272.37
822
5
8
317.21
457
1
9
457.12
822
5
10
690.19
792
2
11
350.63
560
3
12
402.59
790
6
13
412.18
530
2
14
495.58
1,050
7
15
394.36
850
16
16
423.32
778
3
17
712.27
845
17
18
289.66
530
2
19
881.24
1,090
1
20
490.88
1,050
8
21
567.79
913
15
22
665.99
828
20
23
621.45
786
18
24
608.8
821
3
25
473.64
538
19
26
697.14
1,130
21
27
207.51
745
8
28
288.48
821
7
29
284.88
886
11
30
280.36
886
11
31
217.38
745
8
32
270.71
886
11

Organization is a foundation for productivity as well as for solving math problems. applying organizational skills is two-fold. First, it is essential to being productive, for example, when you organize your workspace and manage your time, which allows you to be a successful student. Second, organizational skills are also essential when solving math problems since you must plan how to solve a problem, organize steps in a logical order, and work efficiently through those steps.
Each time you solve a math problem, you are strengthening your organizational skills, whichare valued by employers and will help you lead a more productive life.
Each of the following problems will assess your ability to explain how you would apply organizational skills to math problems in real world situations.
Note: This assignment does not require research, but if you choose to use information from a source, be sure to cite it. To help make sure you are properly citing your sources, please review the
Question 1
Instructions
The two real-life scenarios below represent the importance of organization in mathematics. Specifically, the importance of being able to find a percentage of an amount without a calculator. Ineach scenario box below, add your explanations in the spaces provided.
Scenario 1
You are in a store and want to ensure you have enough cash for an unplanned purchase. You need to be able to calculate the sales tax for your purchase without a calculator.
Part A: Identify a situation that would fit into this scenario and explain how you would organize this calculation to solve it without a calculator. Assume a 5% sales tax rate. For full credit you will need the cost of the item, an explanation of how you would calculate the sales tax, and the total cost.
Example: I am shopping for school supplies at Target, and I have $130 extra. I see air pods on sale for $120. I want to determine if I have enough money to cover the total purchase price, including tax, before I get to the register. Here’s how I would organize the problem in my head (or on paper) to get an accurate calculation…
Type your response here:
Scenario 2
You are at a restaurant with three friends (party of 4) and need to estimate the amount of tip for your portion of the bill without using a calculator. Assume a 20% tip rate. For full credit, you will need the cost of your meal, an explanation of how you would calculate your 20% tip, and the total amount.
Part B: Explain how you would solve this problem by organizing a sample calculation.
Type your response here:
Part C: Refer back to your responses above for Parts A and B: Explain why organization was important in your thought process and calculation for an accurate solution. You should also reflect on how correct organization of a problem can help you in everyday life. Include real-world examples to support your response. Your answer should be a minimum of three sentences.
Type your response here:
Question 2:
Instructions:
The bar graph below represents the education levels of business owners in 2019. Review the details in the bar graph and interpret the data to answer parts A and B below.
U.S. Census Bureau Annual Business Survey. 2020. Data year 2019. Graph.
Question 2 cont.
Part A: An aspiring business owner is planning their college course of study and would like to know whether they should pursue a doctoral degree before they open their own business. Explain what you would recommend to them using two specific examples from the bar graph to support your response. (Hint: You will need to review the number of business owners for each education level in the graph.)
Type your response here:
Part B: Explain why a bar graph is useful for organizing categorical data. Support your explanation with two different observations from the graph.
Type your response here:
Question 3:
Instructions:
Explain how you would organize your step-by-step calculations in evaluating the order of operations problem below. (Remember PEMDAS!) There should be five steps in this calculation. For full credit you must fill in the blanks below with your step-by-step explanation as well as computation for the correct answer. Add space as needed.
Note: If there is no math expression above, please contact your instructor.
Type your response here:
Steps to organize the calculation:
1. First, I would ___________________________________________________ 2. Next, I would ___________________________________________________
3. Then, I would ___________________________________________________
4. Then, I would ___________________________________________________
5. Finally, I would __________________________________________________

I need a tutor who will do my mathematics problems that need to be solved. I am not good at the and need them to be done. I will attach some sample if need be. Bid only if you can do math’s. They are something to do with Compound something like that. You will login and do them in the portal. Once the bid is selected I will assign you the details. Once you do them, send the final screenshot of the results, something like that.

The field of mathematics is vast and diverse, but what we learn in school only scratches the surface. In this video, we will explore the fascinating world of mathematics, starting from its origins in counting. Not only is counting a human trait, but other animals can also count. Evidence of human counting goes back to prehistoric times, with check marks made in bones. The Egyptians were the first to develop equations
Modern Mathematics
Modern mathematics can broadly be broken down into two areas:
Pure mathematics: This is the study of mathematics for its own sake, without any consideration of its usefulness in other fields. Pure mathematics includes topics such as number theory, algebra, and geometry.
Applied mathematics: This is the study of how mathematics can be applied to solve problems in other fields, such as physics, engineering, and finance.