Reference no: EM131317340
Problem 1
Somewhere in the Milky Way Galaxy, a class of 2,000 students took a course in Astronomy. The first exam scores and the final exam percentage reached earth, but transmission broke off after only a dozen students' scores were received. This is the only information available about that class. That information is in the table below.
|
Student
|
Exam 1
|
Final
|
|
Scorpio
|
85
|
76
|
|
Andromeda
|
80
|
77
|
|
Pictor
|
70
|
72
|
|
Tucana
|
85
|
88
|
|
Vulpecula
|
80
|
76
|
|
Crux
|
85
|
83
|
|
Perseus
|
40
|
55
|
|
Orion
|
75
|
77
|
|
Cassieopia
|
80
|
72
|
|
Ursa
|
55
|
73
|
|
Centaurus
|
70
|
71
|
|
Hydrus
|
85
|
81
|
Use these data to answer the following questions
- Using a pencil, paper, and a calculator, find the slope and the intercept term for
Final = a + b Exam1. Show your work, step by step.
- Calculate the regression. Show numbers as two decimal places even if you get 0.00. Print out the Excel results and include them with your homework.
Problem 2
Suppose you are trying to explain why different white men have different levels of earnings. You find the following regression results for a sample of 36,836 white men between the ages of 18 and 93:
EARNS = - 34,164.8 + 477.6 EXPER + 5,792.0 EDUC
(-32.4) (28.8) (68.9)
where
EARNS is the total salary and wages earned by the individual in 2000,
EXPER is an approximation of the person's work experience, calculated as the person's age minus 5 minus EDUC
EDUC is the number of years the person attended school
The numbers below the coefficients are t-statistics
R2 = - 0.12, F-statistic is 2,547.8. The standard error of the regression is 3,753.2.
Use these regression results to answer the following questions.
- If a person if 43 years old and attended school for 16 years, what is his expected earnings?
- Calculate a 95% confidence interval for your estimate in part a.
- Are the coefficients statistically significant? How do you know?
- If our person in part a above went to school one less year and worked one more year, what would be his change in income?
Problem 3
The regression results on the next page use the discharge of CO2 in metric tons from transportation in the US from 1949 to 2006 as the dependent variable. The independent variable, t, is calculated at the year minus 1948, so t=1 for 1949, t = 2 for 1950, and so on until t = 58 for 2006. Use the results on the next page to answer the following questions.
- Use the regression report below to write down the equation from these results.
- Forecast CO2 emissions in metric tons for 2010.
- Since this regression uses time-series data, what problems might arise and how can these be identified?
- What does the R2 statistic tell you?
|
What is the present value of commitment
: When Marilyn Monroe died, ex-husband Joe DiMaggio vowed to place fresh flowers on her grave every Sunday as long as he lived. The week after she died in 1962, a bunch of fresh flowers that the former baseball player thought appropriate for the star c..
|
|
Plot the magnitude of the dft coefficients
: This problem investigates zero padding applied in the frequency domain. Plot each N-point DFT as a function of frequency fk = k/N.
|
|
What contract price will you get a margin call
: You bought the contract during the day at 2010, and had to put up initial margin of $25,000. The maintenance margin is $12,500. At what contract price will you get a margin call? Explain.
|
|
Create a powerpoint presentation to support plan
: Create a PowerPoint presentation to support your plan.- Submit PowerPoint slides with complete speaker's notes presenting your project comprising of all the sections and references.
|
|
Calculate the regression
: Calculate the regression. Show numbers as two decimal places even if you get 0.00. Print out the Excel results and include them with your homework.
|
|
Company with a retirement program
: Lauren has worked for a company with a retirement program, and today is retiring from her job with the amount of $125000 in her retirement account. She decides to withdraw an equal amount from this account,
|
|
Generate a length-20 hann window
: Compute and plot the DFT of x[n] using 20 samples (0 ≤ n ≤ 19). From the plot, can the two non-dc exponentials be identified? Given the amplitude relation between the two, the lower-frequency peak should be twice as large as the higher-frequency p..
|
|
Discuss the financial performance of the starbucks
: Discuss the financial performance of the Starbucks over the past three years.
|
|
Price of multiple of 8 times ebitda
: Capital Budgeting Analysis: You have been asked to evaluate a potential acquisition of a smaller privately owned competitor. The acquisition candidate produces an EBITDA of 10% of your current EBITDA and is offered to your firm at a price of multi..
|