Questions
David E. Brown is an expert in wildlife conservation. In his book The Wolf in the...

David E. Brown is an expert in wildlife conservation. In his book The Wolf in the Southwest: The Making of an Endangered Species (University of Arizona Press), he records the following weights of adult grey wolves from two regions in Old Mexico.

Chihuahua region: x1 variable in pounds

86 75 91 70 79
80 68 71 74 64

Durango region: x2 variable in pounds

68 72 79 68 77 89 62 55 68
68 59 63 66 58 54 71 59 67

(a) Use a calculator with mean and standard deviation keys to calculate x1, s1, x2, and s2. (Use 2 decimal places.)

x1
s1
x2
s2


(b) Let μ1 be the mean weight of the population of all grey wolves in the Chihuahua region. Let μ2 be the mean weight of the population of all grey wolves in the Durango region. Find a 99% confidence interval for μ1μ2. (Use 2 decimal places.)

lower limit
upper limit

(c) Examine the confidence interval and explain what it means in the context of this problem. Does the interval consist of numbers that are all positive? all negative? of different signs? At the 99% level of confidence, what can you say about the comparison of the average weight of grey wolves in the Chihuahua region with the average weight of grey wolves in the Durango region?

Because the interval contains only positive numbers, we can say that the mean weight of grey wolves is greater in the Chihuahua region.Because the interval contains only negative numbers, we can say that the mean weight of grey wolves is greater in the Durango region.    Because the interval contains both positive and negative numbers, we can not say that the mean weight of grey wolves is greater in the Chihuahua region.We can not make any conclusions using this confidence interval.

In: Math

Bill​ (age 42) and Molly Hickok​ (age 39), residents of​ Anchorage, Alaska, recently told you that...

Bill​ (age 42) and Molly Hickok​ (age 39), residents of​ Anchorage, Alaska, recently told you that they have become increasingly worried about their retirement.​ Bill, a public school​ teacher, dreams of retiring at 62 so they can travel and visit family.​ Molly, a​ self-employed travel​ consultant, is unsure that their current retirement plan will achieve that goal. She is concerned that the cost of living in Alaska along with their lifestyle have them spending at a level they could not maintain. Although they have a nice income of more than $100,000 per​ year, they got a late start planning for​ retirement, which is now just 20 years away. Bill has tried to plan for the future by contributing to his​ 403(b) plan, but he is only investing 6 percent of his income when he could be investing 10 percent. Use what they told you along with the information below to help them prepare for a prosperous retirement.

​Molly's income

$79,000

​Bill's income

$42,500

Social Security income at retirement

$2,550​/month

Current annual expenditures

$72,500

​Bill's Roth IRA

$20,500

​Bill's 403(b) plan

$47,400

Marginal tax bracket

25 %

3. Given their projected Social Security and investment​ income, how much will Bill and Molly need to invest annually to make up their income​ shortfall? What is the annual additional funding requirement to reach their income goal? ​(Round to the nearest​ dollar.)

In: Accounting

You are provided with the files "Song.java" and "SongList.java". You are required complete the methods in...

You are provided with the files "Song.java" and "SongList.java". You are required complete the methods in the latter file to implement the sorted circular linked list. The list is sorted according to the title of each song in alphabetical order. You need to write these methods: add(String artist, String title) – This method takes an artist and a title and adds a Song node with these values into the list. The list must still be sorted in ascending order by song title. You do not need to handle duplicates – you can assume that we never insert the same song for more than once. This method takes an artist and a title and remove a Song node that matches the artist and the title from the list. If remove is successful, return true. If no such node exists, return false. buildList(String artist) – This method takes an artist and searches in the list for all the song nodes associated with this artist. It then adds all these nodes into a new sorted circular linked list and returns it as a SongList object. Do not alter the original song list in this method.

public class Song
{
// instance variables
private String m_artist;
private String m_title;
private Song m_link;

// constructor
public Song(String artist, String title)
{
m_artist = artist;
m_title = title;
m_link = null;
}

// getters and setters
public void setArtist(String artist)
{
m_artist = artist;
}

public String getArtist()
{
return m_artist;
}

public void setTitle(String title)
{
m_title = title;
}

public String getTitle()
{
return m_title;
}
  
public void setLink(Song link)
{
m_link = link;
}

public Song getLink()
{
return m_link;
}
}

public class SongList
{
// instance variables
private Song m_last;
private int m_numElements;

// constructor
// Do not make any changes to this method!
public SongList()
{
m_last = null;
m_numElements = 0;
}

// check whether the list is empty
// Do not make any changes to this method!
boolean isEmpty()
{
if (m_last == null)
return true;
else
return false;
}

// return the size of the list (# of Song nodes)
// Do not make any changes to this method!
public int size()
{
return m_numElements;
}

// add a new Song to the circular linked list with the given artist and
// title, keeping the list sorted by *song title*.
public void add(String artist, String title)
{
// TODO: implement this method
}

// remove a Song associated with the given artist and title from the list,
// keeping the list sorted by *song title*.
public boolean remove(String artist, String title)
{
find(artist);
if(found)
{
if (Songlist == Songlist.getLink())
list = null;
else if (previous.getLink() == Songlist)
previous.setLink(m_last.getLink());
numElements--;
}
  
return found;

}
  
  
// build and return a circular linked list that contains all songs from the
// given artist
public SongList buildList(String artist)
{
// TODO: implement this method
}
  
// return a string representation of the list
// Do not make any changes to this method!
public String toString()
{   
String listContent = "";
Song current = m_last;
  
if (m_last != null)
do
{
current = current.getLink();
listContent += " [" + current.getArtist() + " - " + current.getTitle() + "]\n";

} while (current != m_last);

return listContent;
}
}

In: Computer Science

John Tuckland, the CEO of the Storedalsgatan (STI), believes that the company can significantly increase its...

John Tuckland, the CEO of the Storedalsgatan (STI), believes that the company can significantly increase its operating profit by implementing supply chain management. STI manufactures a variety of consumer electronic products, from hair dryers to humidifiers to massagers, for the world market.

John believes that STI has already integrated its internal processes and is ready to proceed with external integration. However, he is uncertain as to which direction to take. Should the company work on integrating the suppliers or the distributors first? Currently, STI uses approximately 1250 different components and/or raw materials in manufacturing its product line. Those components and raw materials are purchased from approximately 275 different suppliers around the world. In terms of distribution, STI currently sends its finished products to a central warehouse that supplies 10 regional distribution centers (RDC); 6 are domestic and 4 are located outside of the United States. Each RDC supplies an average of 12 local distributors that each supply an average of 25 retailers.

John is looking for some advice.

1. Briefly describe STI's supply chain.

2. What are the advantages that STI can gain by implementing supply chain management?

3. What would you recommend STI attempt next? Should it work on integrating the suppliers or the distributors first? Or should it work on both simultaneously?

4. What are your recommendations with regard to the external distributors?

In: Operations Management

How would you apply the assessment-training-evaluation cycle as related to culturally competent services in criminal justice...

How would you apply the assessment-training-evaluation cycle as related to culturally competent services in criminal justice agencies. Also, Provide an example of how you would implement this process in an agency.

How has technology and innovation impacted the criminal justice system?

What future technological innovations may impact the criminal justice system?

In: Psychology

The company officers have made a decision to develop partnerships with a group of distributors. These...

The company officers have made a decision to develop partnerships with a group of distributors. These distributors will employ sales people to call on retailers who sell Body Glove products. What steps can Body Glove take to ensure that retailers and retail customers receive excellent service? Give reasons to justify your steps

In: Operations Management

modern inspection technologies are either optical or non-optical, search for 5 different modern inspection technologies and...

modern inspection technologies are either optical or non-optical, search for 5 different modern inspection technologies and summarize their: (a) working principle(s); (b) applications in the industry; (c) effectiveness in finding the defects; (d) speed of inspection in high-volume manufacturing settings, and (e) ability to perform non-destructive testing on the samples .for example Radiation techniques or Ultrasonic techniques.

In: Operations Management

In Java inputs and output values can easily be manipulated, for example when dealing with money...

In Java inputs and output values can easily be manipulated, for example when dealing with money the value should always be formatted to 2 decimals or another use is separating of words in even spaces, line breaks and etc. Your task is to prompt the user for 2 numbers one integer the other decimal and print their product in money format. The program should also take in two words delimitated by @ symbol.

Sample run 1:
Enter a whole number: 4
Enter a decimal number: 6.854
Enter two words delimitated by @ symbol: Mango@15@
Output:
The product of the 2 numbers: 27.416
The product in money format is: N$ 27.42
Assuming the user bought 4 Mango(s) costing N$ 6.85
The VAT to be charged is 15%, hence total due to be paid is N$ 31.53
[Hint: The two word provided are the item sold and the VAT charged, which is added on the product calculation. For formatted printing and keyboard input see page 129 – 139 in the prescribed book]

In: Computer Science

how can you apply social media monitoring learning to the company you are working with right...

how can you apply social media monitoring learning to the company you are working with right now or your personal brand?

In: Operations Management

What messages did you learn about the comparative value of working with your hands (farming, trucking,...

What messages did you learn about the comparative value of working with your hands (farming, trucking, carpentry, house cleaning), service work (practicing cosmetology, cashiering, waiting tables), or business or professional work (working as a programmer, teacher, nurse, business owner)? What are your thoughts now about these various kinds of work?

What did you learn as a child or teenager about what success meant and why some people are successful and some are not? Where did you learn those ideas?

If you or your family ever received public assistance, what was that like for you? If not, what messages did you receive from your family and teachers about people who did receive public assistance?

What did you learn in your childhood about people asking for help? Was this seen as a defeat or shameful act? Was this seen as an appropriate strategy to manage? Did it make any difference from whom one asked for help?

In: Psychology

Python question Write a program that asks the user to enter a student's name and 8...

Python question

Write a program that asks the user to enter a student's name and 8 numeric tests scores (out of 100 for each test). The name will be a local variable. The program should display a letter grade for each score, and the average test score, along with the student's name.

Write the following functions in the program:

calc_average - this function should accept 8 test scores as arguments and return the average of the scores per student

determine_grade - this function should accept a test score average as an argument and return a letter grade for the score based on the following grading scale:

90-100        A

80-89          B

70-79          C

60-69          D

Below 60     F

In: Computer Science

1.Describe the type of political risk a firm in a specific industry would face in any...

1.Describe the type of political risk a firm in a specific industry would face in any one of today’s emerging markets you are familiar with or have some knowledge of. Select a country and make an assumption that may help in you answering this question, based on the firm’s size or products, among others. (5 sentences max)

2.Identify and describe briefly two host-country sources of political risk a firm would face as it expands abroad.(5 sentences max)

In: Operations Management

What are the main features of the Dodd-Frank Wall Street Reform and Consumer Protection Act of...

What are the main features of the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010?

In: Accounting

Explain the three methods of fraud (Financial Statement Fraud, Occupational Fraud, Collusion), which means analyze each...

Explain the three methods of fraud (Financial Statement Fraud, Occupational Fraud, Collusion), which means analyze each one and provide an example for each.

***Please make it short and simple.

In: Accounting

What are the tips in building trust toward others?

What are the tips in building trust toward others?

In: Psychology