A survey was run by a high school student in order to determine what proportion of mortgage-holders in his town expect to own their house within 10 years. He surveyed 38 mortgage holders and found that the proportion of these that did expect to own their house within 10 years is 0.55.
The student decides to construct a 95% confidence interval for the population proportion.
a)Calculate the margin of error that the high school student will have. Give your answer as a decimal to 2 decimal places.
Margin of error =
A university student finds the survey results of the high school student and believes he should have had a larger sample. The university student surveys 76 mortgage holders in her town and finds that the proportion of these that do expect to own their house within 10 years is again 0.55. This student also constructs a 95% confidence interval for the population proportion.
b)Calculate the margin of error that the university student will have. Give your answer as a decimal to 2 decimal places.
Margin of error =
[2 points]
In: Statistics and Probability
A survey was run by a high school student in order to determine what proportion of mortgage-holders in his town expect to own their house within 10 years. He surveyed 43 mortgage holders and found that the proportion of these that did expect to own their house within 10 years is 0.42. The student decides to construct a 95% confidence interval for the population proportion.
a)Calculate the margin of error that the high school student will have. Give your answer as a decimal to 2 decimal places. Margin of error =
A university student finds the survey results of the high school student and believes he should have had a larger sample. The university student surveys 86 mortgage holders in her town and finds that the proportion of these that do expect to own their house within 10 years is again 0.42. This student also constructs a 95% confidence interval for the population proportion.
b)Calculate the margin of error that the university student will have. Give your answer as a decimal to 2 decimal places. Margin of error =
In: Statistics and Probability
The birth of the Internet in the 1990s led to the creation of a
new industry of online retailers such as Amazon, Overstock.com, and
PCM, Inc. Many of these companies often act as intermediaries
between the manufacturer and the customer without ever taking
possession of the merchandise sold. Revenue recognition for this
type of transaction has been controversial.
Assume that Overstock.com sold you a product for $200 that cost
$150. The company’s profit on the transaction clearly is $50.
Should Overstock recognize $200 in revenue and $150 in cost of
goods sold (the gross method), or should it recognize only the $50
in gross profit (the net method) as commission revenue?
Required:
1. Access the FASB Accounting Standards
Codification at the FASB website (www.fasb.org). What is the
specific nine-digit Codification citation (XXX-XX-XX-XX) that
indicates what an entity assesses to determine whether the nature
of its promise is to act as a principal or agent?
2-a. What indicators does the Codification list that suggest an entity is a principal?
2-b. Determine the specific nine-digit Codification citation (XXX-XX-XX-XX).
3. Using EDGAR (www.sec.gov), access Alphabet, Inc.’s 2017 10-K. Locate the disclosure note that discusses the company’s revenue recognition policy with respect to ads placed on Goggle Network Members' properties.
4. Do you agree with Alphabet’s reasoning with respect to choosing whether it reports revenue gross versus net with respect to these advertising services? Indicate “yes” or “no,” and explain.
In: Accounting
C++ Pig Latin Lab
This assignment uses pointers to perform something done often in computer applications: the parsing of text to find “words” (i.e., strings delineated by some delimiter).
Write a program that encodes English language phrases into Pig Latin. Pig Latin is a form of coded language often used for amusement. Many variations exist in the methods used to form Pig Latin phrases. Use the following algorithm: to form a Pig Latin phrase from an English language phrase, tokenize the phrase into words with the C++ function strtok_s(). To translate each English word into a Pig Latin word, place the first letter of the English word at the end of the English word and add the letters “ay” after it. Thus, the word “jump” becomes “umpjay,” the word “the” becomes “hetay,” and the word “computer” becomes “omputercay.” Blanks between words remain as blanks. Assume that the English phrase input from the keyboard consists of words separated by blanks, there are no punctuations marks, all words have 2 or more letters, and the input phrase is less than 200 characters. Function printLatinWord() should display each word. Hint: Each time a token is found in a call to strtok_s(), pass the token pointer to function printLatinWord() and print the Pig Latin word.
Your program should allow the user to enter phrases until he or she selects an exit option to quit.
In summary: Create a Pig Latin program to implement this functionality: Prompt the user to enter a sentence. Print out the sentence, and then print out the same sentence in Pig Latin. Repeat this sequence until the user elects to quit.
Sol'n so far: (errors in lines 83 and 92)
#include <iostream>
#include <string>
using namespace std;
//class that hold strings of PigLatin
class PigLatin
{
//variable to Piglatin form word
private:
char *latin;
public:
//constructor that converts word into PigLatin
form
PigLatin(char *word)
{
//get the string length
int i, j = 0, len =
strlen(word);
//allocating space
latin = new char[len + 3];
//forming word
for (i = 1; i < len; i++)
{
latin[j] =
word[i];
j++;
}
//Adding last characters
latin[j] = word[0];
j++;
latin[j] = 'a';
j++;
latin[j] = 'y';
j++;
latin[j] = '\0';
}
//Function that returns the word in PigLatin
form
string getLatin()
{
string str(latin);
return str;
}
//Destructor to deallocate memory
~PigLatin()
{
delete[]latin;
}
};
//Function that receives the char * variable as parameter and prints its PigLatin form
void PrintLatinWord(char *str)
{
//creating an object of PigLatin class
PigLatin obj(str);
//Printing word in PigLatin form
cout << obj.getLatin() << " ";
}
//Main function
int main()
{
int i;
char str[200];
char *pch;
char option;
//Loop till user wants to quit
do
{
//Reading a phrase
cout << "\n\n Enter a
sentence to translated:";
cin.getline(str, 200);
//splitting words to
tokens
pch = strtok_s(str, " ");
cout << "\n\t";
//split enter phrase
completes
while (pch != NULL)
{
//Passing
token
PrintLatinWord(pch);
pch =
strtok_s(NULL, " ");
}
//Reading user option
cout << "\n\n Do you want to
enter another sentence? (Y - continue, N - Exit):";
cin.ignore();
} while (option != 'N' && option != 'n');
cout << endl;
system ("pause");
return 0;
}
In: Computer Science
An Investment Bank compared the profiles of a sample of 25 firms that merged during 1985 to 2005 with those of a sample of 25 firms that did not merge. The table displays the information obtained on the firms' price earnings ratio.
|
Price-Earnings Ratio |
||
|
Merged Firms |
Non-Merged Firms |
|
|
Sample Mean |
7.3 |
14.7 |
|
Sample Standard Deviation |
11.0 |
16.0 |
a) At the 5% significance level, carry out a hypothesis test to investigate if the two population variances are equal. [2 marks]
b) At the 1% significance level, is there evidence to indicate that merged firms generally have smaller price-earnings ratios? [6 marks]
c) Is it appropriate to use a pooled variance t–test to test for equality of the mean price- earnings ratio for the two firms [merged and non-merged firms]? What additional assumption is necessary for you to use the t-test?
In: Statistics and Probability
1) [7] At a local high school, the wrestlers and the girls’ lacrosse team had a healthy rivalry, each team claiming they were the best athletes in the school. The girls’ lacrosse team challenged the wrestlers to a free throw contest as the first competition to show their dominance. A random sample of athletes from each team shot ten free throws each. The number of made shots is listed below. Assume the populations are normally distributed. Wrestlers: 4 6 3 7 5 6 8 5 7 4 3 Lacrosse Players: 7 4 7 5 6 8 4 6 7 8 5 4 5 a) Find the sample mean and sample standard deviation for each team. Use Excel to find them. Round each to one decimal place and list the answers in the blanks below with the correct variables. Wrestlers: __________________________ Lacrosse Players: ___________________________ b) Conduct a seven step hypothesis test to determine if there is any difference of the population means for the two groups of athletes with level of significance of 0.05. Assume population variances are equal and that the populations are normally distributed.
In: Statistics and Probability
The firm Hill is planning to acquire Dale, another firm in the same industry. Relevant financial information for the two firms is shown below.
|
Hill |
Dale |
||
|
Price per share, $ |
4.50 |
1.90 |
|
|
Number of shares |
28,000,000 |
10,500,000 |
|
|
Dividend payout ratio |
0.65 |
0.20 |
|
Both firms are financed entirely by equity. The acquisition will result in expected cost savings for the merged (post-acquisition) firm with a total present value of $38 million.
(a) Assume for this part of the question that Hill’s shares are valued at $4.50 each. How many new shares would Hill issue to Dale's shareholders in exchange for the whole 10.5 million of Dale's shares? What is the total value and price per share of the merged firm? Should Hill pay for the acquisition on this basis? Explain briefly.
Assume now that Dale's shareholders will agree to the acquisition for a premium of $4.05 million.
(b)What is the minimum number of shares Hill should offer, such that Dale's shareholders will participate in the acquisition?
(c) Assume Hill decides to acquire Dale by issuing the minimum number of shares as in part (b). In the first year the total earnings of the merged firm will be $15.87 million. Hill’s dividend payout ratio will be maintained in the merged firm. What change in dividend payment will a former Dale shareholder get in the first year of the merged firm, if they had 1000 shares in Dale before the acquisition?
(d)What does clientele theory predict about the relationship between a firm’s value and a change in its dividend policy? Does this theory have any implications for the success of the acquisition? Explain. (150 words)
In: Accounting
The firm Hill is planning to acquire Dale, another firm in the same industry. Relevant financial information for the two firms is shown below.
|
Hill |
Dale |
||
|
Price per share, $ |
4.50 |
1.90 |
|
|
Number of shares |
28,000,000 |
10,500,000 |
|
|
Dividend payout ratio |
0.65 |
0.20 |
|
Both firms are financed entirely by equity. The acquisition will result in expected cost savings for the merged (post-acquisition) firm with a total present value of $38 million.
(a) Assume for this part of the question that Hill’s shares are valued at $4.50 each. How many new shares would Hill issue to Dale's shareholders in exchange for the whole 10.5 million of Dale's shares? What is the total value and price per share of the merged firm? Should Hill pay for the acquisition on this basis? Explain briefly.
Assume now that Dale's shareholders will agree to the acquisition for a premium of $4.05 million.
(b)What is the minimum number of shares Hill should offer, such that Dale's shareholders will participate in the acquisition?
(c) Assume Hill decides to acquire Dale by issuing the minimum number of shares as in part (b). In the first year the total earnings of the merged firm will be $15.87 million. Hill’s dividend payout ratio will be maintained in the merged firm. What change in dividend payment will a former Dale shareholder get in the first year of the merged firm, if they had 1000 shares in Dale before the acquisition?
(d)What does clientele theory predict about the relationship between a firm’s value and a change in its dividend policy? Does this theory have any implications for the success of the acquisition? Explain. (150 words)
(Total = 25 marks)
In: Accounting
Part 1) (a) Find the size of each of two samples (assume that they are of equal size) needed to estimate the difference between the proportions of boys and girls under 10 years old who are afraid of spiders. Assume the "worst case" scenario for the value of both sample proportions. We want a 9999% confidence level and for the error to be smaller than 0.08.0.08.
Answer:
(b) Again find the sample size required, as in part (a), but with the knowledge that a similar student last year found that the proportion of boys afraid of spiders is 0.64 and the proportion of girls afraid of spiders was 0.54.
Answer:
Part 2)
Two random samples are taken, one from among UVA students and the other from among UNC students. Both groups are asked if academics are their top priority. A summary of the sample sizes and proportions of each group answering yes'' are given below:
UVA (Pop. 1):UNC (Pop. 2):n1=81,n2=90,p̂ 1=0.83p̂ 2=0.555UVA (Pop. 1):n1=81,p^1=0.83UNC (Pop. 2):n2=90,p^2=0.555
Find a 93.3% confidence interval for the difference p1−p2p1−p2 of the population proportions.
Confidence interval =
Part 3)
Some shrubs have the useful ability to resprout from their roots after their tops are destroyed. Fire is a particular threat to shrubs in dry climates, as it can injure the roots as well as destroy the aboveground material. One study of resprouting took place in a dry area of Mexico. The investigation clipped the tops of samples of several species of shrubs. In some cases, they also applied a propane torch to the stumps to simulate a fire. Of 20 specimens of a particular species, 4 resprouted after fire. Estimate with 99.8% confidence the proportion of all shrubs of this species that will resprout after fire.
Interval: ______to ______
In: Statistics and Probability
Ending School Segregation: The Case of Farmville, Virginia
No aspect of segregation was more harmful than the separation of black and white children in public schools, especially in the South. This story is about how black students in 1951 staged a strike in Farmville, Virginia, to protest school segregation. How that strike played a major role in ending school segregation is not widely known. Like many towns in the South, Farmville maintained separate school systems for black and white children. For the black students, it was immediately clear that their school facilities were inferior to those of whites. The story of Farmville is a story of victory, but one long delayed, even long after the Supreme Court’s ruling.
Until the Brown v. Board of Education decision, the relevant legal standard was “separate but equal.” What does Farmville tell you about the enforcement of even that standard? What would have happened if that standard had been strictly enforced?
Farmville is a classic example of de jure discrimination, but most discrimination is de facto. How do we address de facto discrimination?
At the time of the Brown decision, racial discrimination was overt in almost all areas of life. Why do you think that the NAACP selected discrimination in education as its prime target?
Title IX and Girl’s Sports
At America’s birth, the Constitution’s framers granted women almost no civil rights. In fact, it took until 1920 for women to win the right to vote, and until the 1970s to gain overall legal equality. The modern women’s movement adopted several lessons from the Civil Rights Movement. For example, to show they were being discriminated against women had to prove they were treated unfavorably simply because they were women. The story of one fight over equality in youth sports illustrates this ongoing struggle.
Is the scheduling of athletic seasons by the state an example of discrimination?
Does it matter that the different season (different from the boys’)
was combined with unequal facilities?
Should it matter that most people think that different seasons for
the same or comparable sports is acceptable? Does it matter if most
girls find it acceptable?
Fighting for the Rights of Disabled Americans
Fighting discrimination often takes years of mass organization, protest, political lobbying, and legal challenges to win new laws and the power to enforce them. The 1973 Rehabilitation Act was considered an early victory for supporters of rights for the disabled. It included a provision stipulating that federally funded programs and facilities must be accessible to disabled individuals. The broader Americans with Disabilities Act of 1990 expanded the protections first articulated in 1973. But the fight for equality often continues beyond the passage of laws recognizing the rights of those who are experiencing discrimination. No one knows this better than those who seek the end of discrimination against people with disabilities.
What steps are necessary to eliminate discrimination against those with disabilities?
What disabilities should be covered by ADA?
Is discrimination against those with disabilities comparable to discrimination against racial minorities and women?
In: Operations Management