How far away is a star that has a parallax of 0.03 seconds of arc? 0.3 parsecs/333.3 parsecs/33.3 parsecs/3.3 parsecs
If you took a measuremnt for a stars position in March, using parallex when is the optimum month for the next measurement? Sept /Oct/ April/ any month
The nearest stars have been catalogued using parallax what is the range of the stars found in this catalogue? 4 to 100 parsecs/ 2 to 1000 parsecs/ 10 to 50 parsecs/ all stars out to 500 parsecs
Compared to close stars, the parallax angle is ________________ for more distant stars. Smaller/ larger/ the same as/ unrelated to distance of stars
Why are astronomers much more interested in the luminosity of a star than its apparent brightness? because the luminosity tells us how bright a star really is, while apparent brightness only tells us how bright it happens to look from Earth/because luminosity can be measured exactly, but apparent brightness can only be roughly estimated/because the luminosity also tells us what elements the star is made of, while apparent brightness cannot tell us a star's chemical make
In: Physics
Consider three choices A, B, C. Choice A gives $30 with
probability 1/2 and $70 with probability 1/2. Choice B gives $50
with certainty. Choice C gives $40 with probability 1/2 and $70
with probability 1/2.
(a) [2 points] For a risk averse individual, determine if the
individual (i) prefers A over B, or
(ii) prefers B over A, or (iii) more information on the
individual's risk attitude is needed to compare A,B for the
individual.
(b) [4 points] Carry out the same comparison as in (a) between
choices (A,C) and (B,C) for a risk averse individual.
(c) [3 points] How do the conclusions in (a)-(b) change when the
individual is risk neutral instead of risk averse?
In: Economics
4. Debt (or leverage) management ratios
Companies have the opportunity to use varying amounts of different sources of financing to acquire their assets, including internal and external sources, and debt (borrowed) and equity funds.
1. Which of the following is considered a financially leveraged firm?
a. A company that uses debt to finance some of its assets
b. A company that uses only equity to finance its assets
2. Which of the following is true about the leveraging effect?
a. Interest on debt is a tax deductible expense, which means that it can reduce a firm’s taxable income and tax obligation.
b. Interest on debt can be deducted from pre-tax income, resulting in a greater taxable income and a smaller available operating income.
Red Snail Satellite Company has a total asset turnover ratio of 3.50x, net annual sales of $25 million, and operating expenses of $11.25 million (including depreciation and amortization). On its current balance sheet and income statement, respectively, it reported total debt of $2.5 million, on which it pays 7% interest on its outstanding debt.
To analyze a company’s financial leverage situation, you need to measure the firm’s debt management ratios. Based on the preceding information, what are the values for Red Snail Satellite’s debt management ratios? (Note: Do not round intermediate calculations.)
RatioValueDebt ratioTimes-interest-earned ratio
Red Snail Satellite Company raises around from creditors for each dollar of equity.
Influenced by a firm’s ability to make interest payments and pay back its debt, if all else is equal, creditors would prefer to give loans to companies with ____ (low or high) debt ratios.
In: Finance
According to the Institute for Students in Shackles, 70% of all college students in a recent year graduated with student loan debt. The University of Florida reports that only 52% of its graduates from a random sample of 500 students have student loan debt. Use a hypothesis test to determine if there is enough evidence to support UF’s claim that student loan debt is less.
a) State your null and alternative hypothesis.
b) Find p-hat, SD, Z, and the P-value
In: Statistics and Probability
Richard Thaler, (Professor, The University of Chicago Booth School of Business) said: “We failed to learn from the hedge fund failures of the late ’90s.” His message (Links to an external site.)to overconfident risk managers: There’s more risk out there than you think.
a) What do you think of Wall Street (or any financial markets)? Do we need Wall Street? Why or Why not?
b) What is "The Paradox of Thrift"? How does that apply to our current situation?
In: Economics
In 2015, the student body of a Lock Haven University consisted of 30% freshmen, 24% sophomores, 26% juniors, and 20% seniors. A sample of 300 students taken from this year's student body showed the following number of students in each classification.
|
Freshmen |
83 |
|
Sophomores |
68 |
|
Juniors |
85 |
|
Seniors |
64 |
We are interested in determining whether or not there has been a
significant change in the classifications between the last school
year and this school year. At 95% confidence, the null
hypothesis
In: Statistics and Probability
Government of Afghanistan has called on a conference on “Strategies to reduce Trade Deficit via discouraging Imports”. Kardan University got invitation too from the Ministry and the BBA and BSc Economics Departments has selected you to make a presentation suggesting how currency value can be used to reduce imports. Develop a numerical example explaining if the value of local currency going up how it can effect imports of Afghanistan. Also analyze the long term impact of currency appreciation on the Economy.
In: Economics
Richard Thaler, (Professor, The University of Chicago Booth School of Business) said: “We failed to learn from the hedge fund failures of the late ’90s.” His message (Links to an external site.)to overconfident risk managers: There’s more risk out there than you think.
a) What do you think of Wall Street (or any financial markets)? Do we need Wall Street? Why or Why not?
b) What is "The Paradox of Thrift"? How does that apply to our current situation?
In: Economics
Refer to Exhibit 8-1. If the sample mean is 9 hours, then the 95% confidence interval is approximately
Exhibit 8-1: In order to estimate the average time spent on the computer terminals per student at a local university, data were collected from a sample of 81 business students over a one-week period. Assume the population standard deviation is 1.2 hours.
a. 7.04 to 110.96 hours
b. 7.36 to 10.64 hours
c. 7.80 to 10.20 hours
d. 8.74 to 9.26 hours
In: Statistics and Probability
According to a recent report, 47% of college student internships are unpaid. A recent survey of 100 college interns at a local university found that 52 had unpaid internships.
a. Use the five-step p-value approach to hypothesis testing and a 0.10 level of significance to determine whether the proportion of college interns that had unpaid internships is different from 0.47.
b. Assume that the study found that 59 of the 100 college interns had unpaid internships and repeat (a). Are the conclusions the same?
In: Statistics and Probability