Briefly describe the history of antitrust policies in the United States. What are the advantages and disadvantages of highly concentrated industries? Does market power encourage or discourage innovation? Under what circumstances should the government use its antitrust authority to limit industry concentration and market power?

Rotelco is one of the largest digital wireless service providers in the United States. In a recent year, it had approximately 100 direct subscribers (accounts) that generated revenue of $28,400. Costs and expenses for the year were as follows: Cost of revenue $13,900 Selling, general, and administrative expenses 9,400 Depreciation 3,100 Assume that 75% of the cost of revenue and 20% of the selling, general, and administrative expenses are variable to the number of direct subscribers (accounts). a. What is Rotelco's break-even number of accounts, using the data and assumptions above? Round to the nearest whole number. accounts b. How much revenue per account would be sufficient for Rotelco to break even if the number of accounts remained constant? Round to the nearest dollar. $ per account

The mean income per person in the United States is $43,500, and the distribution of incomes follows a normal distribution. A random sample of 14 residents of Wilmington, Delaware, had a mean of $50,500 with a standard deviation of $11,400. At the 0.010 level of significance, is that enough evidence to conclude that residents of Wilmington, Delaware, have more income than the national average? State the null hypothesis and the alternate hypothesis. State the decision rule for 0.010 significance level. (Round your answer to 3 decimal places.) Compute the value of the test statistic. (Round your answer to 2 decimal places.) Is there enough evidence to substantiate that residents of Wilmington, Delaware, have more income than the national average at the 0.010 significance level?

The percentage of newborn baby boys in the United States is 51.2%. In a recent sample of 964 births, 473 of the newborn babies were boys. Use a level of significance of 0.02 to test the claim that the percentage of newborn baby boys is not equal to 51.2%. Show your work to receive credit.

The SAT is required of most students applying for college admission in the United States. This standardized test has gone through many revisions over the years. In 2005, a new writing section was introduced that includes a direct writing measure in the form of an essay. People argue that female students generally do worse on math tests but better on writing tests. Therefore, the new section may help reduce the usual male lead on the overall average SAT score (The Washington Post, August 30, 2006). The data provided is a sample of 60 students and their writing scores on the SAT from last year. The goal of this case study is to analyze the data and make conclusions about the population SAT scores and the difference between male and female scores.

Note: Use Excel to solve, including screenshots, and directions on how to solve on excel, construct the Null hypothesis too, Include each answer with its question number (1,2,3)

1.Construct the null and the alternative hypotheses to test if females outscore males on writing tests.  

2.Assuming the difference in scores is normally distributed, calculate the value of the test statistic. Do not assume that the population variances are equal.

3.Implement the test at alpha=0.01 and interpret your results.

Calibrating a scale: Making sure that the scales used by businesses in the United States are accurate is the responsibility of the National Institute for Standards and Technology (NIST) in Washington, D.C. Suppose that NIST technicians are testing a scale by using a weight known to weigh exactly 1000 grams. The standard deviation for scale reading is known to be σ=2.6. They weigh this weight on the scale 44 times and read the result each time. The 44 scale readings have a sample mean of x=1000.4 grams. The scale is out of calibration if the mean scale reading differs from 1000 grams. The technicians want to perform a hypothesis test to determine whether the scale is out of calibration. Use the α=0.05 level of significance and the P-value method with the table.

1) State the appropriate null and alternate hypotheses.

H0:
H1:

This hypothesis test is a two tailed, right or left test?

2) Compute the value of the test statistic. Round the answer to at least two decimal places.

3)Find the P-value. Round the answer to at least four decimal places.

4) Determine whether to reject H0.

reject or do not reject  the null hypothesis H0?

5) State a conclusion.

There is or is not enough evidence to conclude that the calibration point Is set too high, calibration point is set too low or scale is out of calibration

Between about December 2007 and June 2009, the United States was considered to be in a recession. The U.S. Gross Domestic Product fell approximately 3% from the third quarter of 2008 to the third quarter of 2009. Also, during December 2007 and June 2009, the Standard and Poor’s 500 index dropped by 38% and the unemployment rate climbed from 5% to 9.5%.

The macroeconomic situation affected almost all companies since higher unemployment affected personal consumption, which dropped from 10,140.3 Billion Dollars in Aug 2008 to 9,807 Billion Dollars in June 2009, a drop of 3.8 percent.

Starbucks is one of the companies affected by the December 2007 recession. The following table shows several ratios for Starbucks corresponding to the years 2006, 2007, and 2008. Use a stock price of 10.9 dollars per share for the year 2009.

By using the financial statements provided, calculate the ratios presented in the table for the year 2009 and answer the following questions:

e-      In what ratio can you see the change in the mix of debt and equity reflected?

g-       Did the quick ratio increase or decrease between the years 2007 and 2009?

h-      Explain why you expect the quick ratio to increase or decrease during a recession?

j-        What areas should Starbucks improve for the years 2010 onwards, if any?

Annual report:

http://media.corporate-ir.net/media_files/irol/99/99518/SBUX_AR.pdf

Expert Answer

1. Explicit collusion by members of a cartel is illegal in the United States and many other countries. Nonetheless, cartels do manage to form and, in some cases, persist for extended periods. Can you identify actions cartel members could take that might help them coordinate their actions but stop short of explicit agreements?

2. List five examples of markets that you would consider to be oligopolies (a few firms engaged in strategic competition). For each example, explain whether you think the market is an example of Cournot or Bertrand competition (or neither).

3. Discuss why product differentiation is an important feature of many oligopoly markets. What is the effect of increased differentiation on the profitability of the firms in the market?

Please answer all the three questions by one paragraph for each in one posting.

Between about December 2007 and June 2009, the United States was considered to be in a recession. The U.S. Gross Domestic Product fell approximately 3% from the third quarter of 2008 to the third quarter of 2009. Also, during December 2007 and June 2009, the Standard and Poor’s 500 index dropped by 38% and the unemployment rate climbed from 5% to 9.5%.

The macroeconomic situation affected almost all companies since higher unemployment affected personal consumption, which dropped from 10,140.3 Billion Dollars in Aug 2008 to 9,807 Billion Dollars in June 2009, a drop of 3.8 percent.

Starbucks is one of the companies affected by the December 2007 recession. The following table shows several ratios for Starbucks corresponding to the years 2006, 2007, and 2008. Use a stock price of 10.9 dollars per share for the year 2009.

By using the financial statements provided, calculate the ratios presented in the table for the year 2009 and answer the following questions:

a-       Were sales per dollar of assets impacted by the recession?

a.       Yes

b.       no

b-      , which ratio shows the impact of the recession on sales per dollar of assets?

a.       ROA

b.       Asset turnover ratio

c.       Quick ratio

d.       ROE

c-       Did the company operating profit margin increased, decreased, or was the same, between the years 2007 and 2009?

a.       Increase

b.       Decrease

c.       Did Not change

d-      Did the mix of debt and equity changed for Starbucks between the years 2007 and 2009?,

a.       Yes

b.       no

e-       In what ratio can you see the change in the mix of debt and equity reflected?

a.       Current ratio

b.       Quick ratio

c.       Debt to equity ratio

d.       Payout ratio

f-        Did the value added by management, reflected in market to book ratio, increased or decreased between the years 2007 and 2009?

a.       Increased

b.       decreased

g-       Did the quick ratio increase or decrease between the years 2007 and 2009?

a.       Increase

b.       decrease

h-      Explain why you expect the quick ratio to increase or decrease during a recession?

i-        Use the ratios for the years 2007 and 2009 to explain if, in your view, Starbucks is in a better or worse situation in the year 2009 due to the recession.

j-        What areas should Starbucks improve for the years 2010 onwards, if any?

The average age of all vehicles registered in the united states is 96 months with the population standard deviation of 16 months. If a random sample of 36 vehicles is selected, find the probability that the mean of their age is between 90 an 100 months. Group of answer choices 92.1% 93.3% 62.4% 12.2%