Question 1

As of January 2014, 58% of American adults have a Smartphone and on average, spend 34 hours per month using the mobile internet on Smartphone.

A researcher became interested to estimate the unknown average hours students in a given university spend in the mobile internet on Smartphone. The researcher takes a sample of 10 students in the university. The sample data is given below:

Suppose that the population standard deviation of students spending in the mobile internet on Smartphone is 7.89.

The point estimate of population mean μ  is

Group of answer choices

38.6

58

10

35

Question 2

As of January 2014, 58% of American adults have a Smartphone and on average, spend 34 hours per month using the mobile internet on Smartphone.

A researcher became interested to estimate the unknown average hours students in a given university spend in the mobile internet on Smartphone. The researcher takes a sample of 10 students in the university. The sample data is given below:

Suppose that the population standard deviation of students spending in the mobile internet on Smartphone is 7.89.

A 95% CI of the population mean μ  is

Group of answer choices

(34.49, 42.70)

34.51, 44.21

(31.71, 41.49)

(33.71, 43.49)

Question 3

A researcher wishes to find a 95% confidence interval for an unknown population mean μ using a sample of size 30. The population standard deviation is 8.88.

The margin of error for this confidence interval will be

Group of answer choices

3.2

1.6

2.7

0.95

Boyne University offers an extensive continuing education program in many cities throughout the state. For the convenience of its faculty and administrative staff and to save costs, the university operates a motor pool. The motor pool’s monthly planning budget is based on operating 24 vehicles; however, for the month of March the university purchased one additional vehicle. The motor pool furnishes gasoline, oil, and other supplies for its automobiles. A mechanic does routine maintenance and minor repairs. Major repairs are performed at a nearby commercial garage.

The following cost control report shows actual operating costs for March of the current year compared to the planning budget for March.

The planning budget was based on the following assumptions:

1. $0.14 per mile for gasoline.
2. $0.12 per mile for oil, minor repairs, and parts.
3. $36 per automobile per month for outside repairs.
4. $72 per automobile per month for insurance.
5. $8,610 per month for salaries and benefits.
6. $197 per automobile per month for depreciation.

The supervisor of the motor pool is unhappy with the report, claiming it paints an unfair picture of the motor pool’s performance.

Required:

1. Calculate the spending variances for March.

Consider two $60,000 investments – call them Investment A and Investment B. Both investments will earn $5,000 with a probability of 0.5 and $1,000 with a probability of 0.5. Investment A will use 100% equity financing (issuing stocks). Investment B will get $30,000 through issuing stocks and $30,000 through issuing bonds. Investment B must pay 4% interest on the bonds.

a. Calculate the expected returns on equity (returns after interest payments divided by the amount of equity) for Investment A and Investment B. Express the returns as a percentage.

b. If the investments earned the lower amount ($1,000), what is the rate of return on equity for Investment A and Investment B? If the investments earned the higher amount ($5,000), what is the return on equity for Investment A and Investment B?

c. Using your answers from ‘a’ and ‘b’, what is the standard deviation of the rate of return on equity in each case? Which investment has the highest expected returns on equity? Which has the lowest risk? What explains the difference in risk between the two investments?

The table below shows the national income accounts for a hypothetical economy, Metrica.

a. The income-based estimate of Metrica's GDP is $   billion.

b. The expenditure-based estimate of Metrica's GDP is $   billion.

c. The value of the statistical discrepancy which is added to the lower estimate and subtracted from the higher estimate to find a single GDP value is $   billion.

d. Metrica's GDP is $   billion.

e. Metrica's capital stock   (Click to select)   contracted   expanded  by $   billion.

f. Metrica's GNI is $   billion. This means that income earned by the residents of other countries for their involvement in production in Metrica is   (Click to select)   less   greater  than income earned by residents of Metrica for their involvement in production in the rest of the world.

1. A monopolist serves market A with an inverse demand curve of P = 12 - Q. Another monopolist serves market B with an inverse demand curve of P = 22 - 2Q. Suppose that both monopolists have a constant marginal cost of $2. What is the producer surplus earned by the monopolist serving market A?

2. A monopolist serves market A with an inverse demand curve of P = 12 - Q. Another monopolist serves market B with an inverse demand curve of P = 22 - 2Q. Suppose that both monopolists have a constant marginal cost of $2. What is the producer surplus earned by the monopolist serving market B?

3, A monopolist serves market A with an inverse demand curve of P = 12 - Q. Another monopolist serves market B with an inverse demand curve of P = 22 - 2Q. Suppose that both monopolists have a constant marginal cost of $2. Using your answers from the previous two questions, which producer surplus is higher (in market A or market B) and why?

Concrete Consulting Co. has the following accounts in its ledger: Cash; Accounts Receivable; Supplies; Office Equipment; Accounts Payable; Jason Payne, Capital; Jason Payne, Drawing; Fees Earned; Rent Expense; Advertising Expense; Utilities Expense; Miscellaneous Expense.

Journalize the above selected transactions for October 2019 in a two-column journal. Refer to the Chart of Accounts for exact wording of account titles.

1. Find a 95% confidence interval for the mean amount of money per capita spent on healthcare. (To do this you will need to use the variable health $ per capita in the Global Health Summary data set.) Round your answer to the nearest cent.
2. Describe what requirements must be met for this interval to be valid and whether you think that this data set meets these requirements.
3. Using a complete sentence, interpret the meaning of the confidence interval using the context of the problem.

A bank currently has $70,000 in deposits, $6,000 in cash in the vault, $12,000 on deposit with the Fed, and $7,000 in government securities. The required reserve ratio is 20 percent. Answer these questions:

1) What is the maximum amount the money supply can increase, assuming this bank is the only bank in the system that has excess reserves?

2) An individual deposits a $750,000 check into the bank. That individual had just converted foreign currency into dollars so the $750,000 was not in the money supply before the deposit. What is the maximum size loan the bank can make once the check clears?

3) What is the maximum amount the money supply can increase as a result of the $750,000 deposit?

4) If these expansions in the money supply happen, what effect will it have on aggregate demand, GDP, and employment?

5) What could keep the expansions from happening?

4.List four type of epidemiologic information useful for influencing public health policy and for planning individual health decisions.

define “efficacy” and “effectiveness,” note their difference, and provide example of both.

6. In what ways does epidemiology plays a foundational role in public health?

7. Distinguish between a necessary cause and a sufficient cause. 8. Explain the epidemiology triangle and compare and contrast it with the advanced epidemiology triangle. 9.Describe how primary prevention, secondary prevention, and tertiary prevention may be used to deal with cancer. 10. HIV/AIDS can be transmitted from an infected person to another person through blood, semen, vaginal fluids, and breastmilk. High-risk behaviors include homosexual practices; unprotected oral, vaginal, or anal sexual intercourse; and needle sharing. Discuss how this information can be used in public health action and in individual decision making.

The following schedules shows the demand and supply for a product.

Schedule 1: Demand of individual consumers

Schedule 2: Supply from individual producers

Calculate the market demand and market supply.