A university financial aid office polled an SRS of undergraduate students to study their summer employment. Not all students were employed in the previous summer. Among 797 students, 518 of them were employed.

a. Is there evidence to support that the proportion of students employed during the summer is greater than 60%? Using a significance level 0.05.

b. Construct a 95% confidence interval for the proportion of students who were employed during the summer.

a) Explain a foreign currency futures contract and outline the differences between futures and forwards. b) The Chicago Mercantile Exchange (CME) and the New York Board of Trade (NBOT) operate futures markets in currencies in the following pairs US$/pounds and US Dollar/Pound. The value standardize size of a sterling futures contract is 6,500 pounds. Describe how a UK company that expects to received US$800,000 in three months time can use a futures contract to hedge transaction exposure if the following apply i) Currency spot rate US$ 1.64/pounds - US$1.68pounds ii) Sterling futures price US$1.64/Pounds

A clinical psychologist wished to compare three methods for reducing hostility levels in university students using a certain psychological test (HLT). High scores on this test were taken to indicate great hostility, and 11 students who got high and nearly equal scores were used in the experiment. Five were selected at random from among the 11 students and treated by method A, three were taken at random from the remaining six students and treated by method B, and the other three students were treated by method C. All treatments continued throughout a semester, when the HLT test was given again. The results are shown in the table.

Let μ_A and μ_B, respectively, denote the mean scores at the end of the semester for the populations of extremely hostile students who were treated throughout that semester by method A and method B.

(a) Find a 95% confidence interval for μ_A.

(b) Find a 95% confidence interval for μ_B.

(c) Find a 95% confidence interval for (μ_A − μ_B).

A researcher is interested in seeing if playing violent video games leads to a change in aggressive attitudes. The researcher recruits an experimental group, who plays a violent video game for 1 hour, and a control group. Both groups complete a measurement instrument that measures their aggressive attitudes on a scale of 0-100.

A. What type of study design is this (descriptive, correlational, or experimental)?

B. What would be the appropriate statistical analysis to use in that situation (Chi-Square, Pearson correlation, one sample t-test, paired samples t-test, independent samples t-test, or ANOVA)?

A researcher is interested in seeing how a group of law school students from a prestigious university compared in their scores on the bar exam to other law school students who have taken it. The researcher obtains data on the national average scores for comparison and mean scores from 10 participants.

A. What type of study design is this (descriptive, correlational, or experimental)?

B. What would be the appropriate statistical analysis to use in that situation (Chi-Square, Pearson correlation, one sample t-test, paired samples t-test, independent samples t-test, or ANOVA)?

When setting the rate for Worker’s Compensation for an individual company, what is the criteria used?

1. There is evidence to suggest that elicited social preferences vary over time for the same individual. For instance, a person might appear selfish one month and a reciprocator the next month. How should we interpret that?
2. Why does evolution favour individuals who avoid aggregate risk?

Diabetic one Who is at risk for getting this disease (What attributes, characteristics or exposure makes an individual increase their chances to develop this disease or injury)? Name three to five patient teachings associated with this disease. How can this disease be prevented? (What can be done not to get the disease)

Explain the main source of funding and delivery of healthcare services for the population? (Where do they usually receive care? Who usually pays for it? (employers, government, individual) As you explore funding and delivery, identify any gaps that exist. (Do they fall between sources of care or funding?)

Women athletes at the a certain university have a long-term graduation rate of 67%. Over the past several years, a random sample of 40 women athletes at the school showed that 21 eventually graduated. Does this indicate that the population proportion of women athletes who graduate from the university is now less than 67%? Use a 1% level of significance.

(a) What is the level of significance?


State the null and alternate hypotheses.

H₀: p < 0.67; H₁: p = 0.67H₀: p = 0.67; H₁: p > 0.67    H₀: p = 0.67; H₁: p ≠ 0.67H₀: p = 0.67; H₁: p < 0.67

(b) What sampling distribution will you use?

The standard normal, since np > 5 and nq > 5.The Student's t, since np > 5 and nq > 5.    The Student's t, since np < 5 and nq < 5.The standard normal, since np < 5 and nq < 5.

What is the value of the sample test statistic? (Round your answer to two decimal places.)


(c) Find the P-value of the test statistic. (Round your answer to four decimal places.)


Sketch the sampling distribution and show the area corresponding to the P-value.

Yasmin Jamieson is 18 years old and is about to graduate from an Ottawa high school. She must decide: which university will she attend in September? She wants to follow a 4-year undergraduate degree in Economics. Yasmin has been accepted to attend McMaster University in Ontario, Canada, and Stanford University, California, United States. She faces only one annual cost for the each of the four years she is in university: tuition. Annual tuition at McMaster is $15,000. At Stanford, annual tuition is $45,000. Assume that she is not considering the option of working after high school. Therefore, do not consider the foregone labour earnings when going to university. After graduation, Yasmin has a strong interest in Labour Economics and hopes to receive job offers from Capital Economics (near Hamilton, Canada) and from Insight Economics (near Stanford, USA).

She knows that these two companies offer different annual salaries depending on where one has graduated. Capital Economics will offer a McMaster graduate an annual salary of $128,000 and a Stanford graduate an annual salary of $160,000. Insight Economics will offer a McMaster graduate an annual salary of $175,000 and a Stanford graduate an annual salary of $250,000.

Let’s assume the following:

• Yasmin’s objective in her decision-making is to maximize the present value of net future income over her career (that is, income net of costs).

• She is certain to get job offers from both companies.

• Please ignore differences between these two cities in terms of income taxes, the exchange rate, the cost of living and moving costs.

• These annual salaries do not change for the duration of her expected career, from age 22 to 65. Hint: this time horizon is sufficiently long to use the present value (PV) approximation formula.

• However, the present value of annual tuition costs should be calculated using the expanded present value formula.

• The market interest rate is 5%. Which university would you recommend to Yasmin? Please show all your calculations and explain your recommendation. (20 points)