A sample of ? = 50 non-listed UK companies had an average level of profit/loss (divided by turnover) during the previous year equal to ? = 0.27%, with a sample standard deviation of ? = 1.25%.

(i) Test whether there is convincing evidence that non-listed UK companies on average made a profit during the previous year (at a significance level of 5%).

(ii) Test whether there is convincing evidence that non-listed UK companies on average made a loss during the previous year (at a significance level of 5%). Considering your results from (i) and (ii), briefly discuss what you can conclude about the average profitability of non-listed UK firms.

(iii) Construct a 95% confidence interval around the sample mean ?, and briefly discuss the intuition behind this interval.

(iv) Re-do the test in (i) assuming that the sample size was equal to ? = 200. Briefly compare the results to those obtained in (i).

(v) Re-do the test in (i) assuming a significance level of 10%. Briefly compare the results to those obtained in (i).

Unit 9 Homework Eco 765 1. The US health care system relies more on competition, market mechanisms, and pricing than Beveridge-type systems. a. Summarize the pros and cons of the UK approach (i.e. relying less on competition and markets, having a centrally controlled, single-payer system). In your assessment, what is the greatest success of the UK system? Explain. b. How has the UK attempted to address the negative aspects of their single-payer system through various policy reforms? Be sure to explain the economic rationale for the reforms. c. How successful have UK reform attempts been? Why has the NHS been experiencing problems in recent years? (read the articles on D2L!; not Covid-19 related) d. How might NHS internal-market reforms create a “race to the bottom”? You might have to look up this expression...this is a common critique of many different public policies. e. Evaluate the pros and cons of having a parallel private market for health care alongside the NHS.

Below is the income statement of a publicly-traded biotech company from 2004 until 2007:

The company’s stock was trading for $2 in 2004 and is now trading for $7. Are investors irrational? Should the stock be sold short? Is it possible for a company in the biotech business to be worth something even though it has no current sales? What can justify the billion-dollar values of technology companies which have yet to earn any profits?

What strategies do college students employ in order to “game” their academic report cards? In light of this gaming, how can prospective employers and graduate schools determine the true academic performance of undergraduates?

Post a two- paragraph summary in your own words, of Walden's policy on academic integrity. Identify three types of academic integrity violations, and explain what stidents can do to avoid them.

Ray Ray made the following contributions this year.

American Heart Association plans to sell the stock to fund its operations. First Methodist Church intends to sell the antique painting. Ray Ray has owned the painting and Coca-Cola stock since 1990.

What is the total amount of charitable contributions subject to the 30% of AGI ceiling?

"It is obvious that the Church had a great influence on the music of the Medieval, Renaissance, and even the Baroque. Do you believe that was a good thing? Was it it beneficial, for the development of the music in general and composers in particular, that they were scrutinized by the Church? Would have they been better off if they were offered free-reign, and allowed to compose whatever they wanted, however they wanted? Finally, can you think of a similar instance, in art, literature, or any other genre, where an institution had a great control over the creative process? What was the outcome in that particular instance?

Response should be a well developed paragraph

Suppose a simple random sample of 26 male students is asked whether they have pulled an "all-nighter " for academic reasons and 10 answered "yes." Suppose a simple random sample of 25 female students is asked whether they have pulled an "all-nighter" for academic reasons and 8 answered "yes."

Is there insufficient evidence based on the sample to reject the claim that male and female students are equally likely to have pulled an "all-nighter" for academic reasons?

Suppose a simple random sample of 26 male students is asked whether they have pulled an "all-nighter " for academic reasons and 10 answered "yes." Suppose a simple random sample of 25 female students is asked whether they have pulled an "all-nighter" for academic reasons and 8 answered "yes."

Is there insufficient evidence based on the sample to reject the claim that male and female students are equally likely to have pulled an "all-nighter" for academic reasons?