The mean area of homes in a certain city built in 2009 was 2438
square feet. Assume that a simple random sample of 11 homes in the
same city built in 2010 had a mean area of 2,297 square feet, with
a standard deviation of 225 square feet. An insurance company wants
to know if the mean area of homes built in 2010 is less than that
of homes built in 2009. Compute the P-value of the
test.
Write down your P-value. You will need it for the next
question.
Write only a number as your answer. Round to four decimal places
(for example: 0.3841).
In the last question, an insurance company wants to know if the mean area of homes built in 2010 is less than that of homes built in 2009. What is the conclusion at the 0.05 level of significance?
Question 13 options:
|
There is evidence to conclude that the mean area of homes built in 2010 is less than that of homes built in 2009 |
|
|
There is not enough evidence to conclude that the mean area of homes built in 2010 is less than that of homes built in 2009 |
|
|
There is evidence to conclude that the mean area of homes built in 2010 is not less than that of homes built in 2009 |
|
|
There is not enough evidence to conclude that the mean area of homes built in 2010 is not less than that of homes built in 2009 |
In: Statistics and Probability
5. The public debt - ownership
The following table contains approximate figures for gross domestic product (GDP) and the national debt in the United States for June 2001 and June 2010. The national debt represents the total amount of money owed by the federal government to holders of U.S. securities. All numbers are in trillions of dollars.
| GDP | Total National Debt | Debt Held by |
Debt Held Outside Fed. Govt. and Fed. Reserve |
||
|---|---|---|---|---|---|
| (Trillions of Dollars) | (Trillions of Dollars) | U.S. Government Agencies | Foreign Ownership | U.S. Ownership | |
| (Trillions of Dollars) | (Trillions of Dollars) | (Trillions of Dollars) | |||
| June 2001 | 10.1 | 5.7 | 3.0 | 1.0 | 1.7 |
| June 2010 | 14.5 | 13.2 | 4.6 | 4.0 | 4.6 |
Source: “U.S. Treasury, Bureau of Economic Analysis.”
The net national debt is the portion of the national debt held outside the federal government (government agencies and the Federal Reserve System). In June 2001, the net national debt as a percentage of total national debt was "50.3" "47.4" "50.8" "55.1" %?
In June 2001, the percentage of the U.S. national debt held by foreigners was "17.5" "18.9" " 18.0" "19.6" %?
The fraction of the national debt held by foreigners will eventually need to be repaid to foreigners, thereby reducing the collective purchasing power of Americans. Between 2001 and 2010, the fraction of the national debt held by foreigners "Decreased" or "Increased"
The absolute level of the debt does not necessarily provide a clear indication of a nation's debt burden. Thus, economists often look at relative measures of the national debt. One possible relative measure of the national debt is the net national debt as a percentage of GDP. In 2001, the net national debt was "26.7" "44.9" "49.7" "49.2" % of GDP. Between 2001 and 2010, the net national debt as a percentage of GDP "Increased" or "Decreased"
In: Economics
Genetic vs. environment: Give example stories illustrating how environment and genetics affect development:
1. nature vs. nurture:
2. heritability:
3. gene-environment interaction:
4. epigenesis:
Individualist vs. collective societies: Tell stories that illustrate examples of: individualistic and collective societies comparing the 2 types of societies. Discuss pros and cons of each on childhood development.
1. individualistic societies:
2. collective societies:
3. Discuss pros and cons of each on childhood development:
In: Nursing
In: Finance
Think of a large industrial firm or retailer in your region that has recently closed down (or is at risk of closing). What are some of the reasons for its closure? How are these related to the globally interconnected economy?
In: Economics
In: Finance
In: Finance
Regarding the hotel/hospitality industry
Who are the competitors? Is it easy to start a business in this industry? Are there significant entry barriers? What are the dominant characteristics and current trends in your industry?
Discuss industry size in terms of the number of companies, total employment, capital investment, major customers, and annual revenues. What are the driving forces of change in the industry, (e.g., innovation, technology, and buyer preferences and lifestyles)? State how organizations compete within the industry and identify the critical success factors in this industry.
In: Economics
If engineering graduates’ average (starting) salaries were approximately $60,000 for the class of 2010. What will the average starting salaries amount be in 2020, if engineering starting salaries increase at the rate of (a) 2% per year, and (b) twice that rate or 4% per year?
Please no excel need to show work
In: Economics
An empty tin can with height of 30cm and a diameter of 15cm is open at one end and closed at the other end. If the vertical can, with open end down, be slowly immersed in water, how far the water will rise inside the can when the closed end is 10 cm below the water surface?
I know this is easy, but when I'm solving for h, I'm getting a negative value, means that the can will be filled completely?
In: Physics