Medical researchers conducted a national random sample of the body mass index (BMI) of 654 women aged 20 to 29 in the U.S. The distribution of BMI is known to be right skewed. In this sample the mean BMI is 26.8 with a standard deviation of 7.42. Are researchers able to conclude that the mean BMI in the U.S. is less than 27?

Conduct a hypothesis test at the 5% level of significance using StatCrunch (directions) or calculating T and using the T-Distribution Calculator above.

Based on your hypothesis test, what can we conclude?

Group of answer choices

a) With a mean BMI of 26.8, the data supports the claim that the average BMI is less than 27, but the difference is not statistically significant. We fail to reject the null hypothesis that the mean BMI for women aged 20 to 29 in U.S. is 27.

b) With a mean BMI of 26.8, the data supports the claim that the average BMI is less than 27. We reject the null hypothesis that the mean BMI for women aged 20 to 29 in U.S. is 27.

c) Nothing. The distribution of the variable in the population is right skewed, so the conditions for use of a t-model are not met. We cannot trust that the p-value is accurate for this reason.

In 2016, United Kingdom voted to leave the European Union. On Marsh 29, 2019 the Brexit AKA secession from the Union is schedule to take place. The referendum results and the approaching date of the secession have negatively affected business environment in the UK leading to a growth rate slowdown in the Kingdom. Explain how the Brexit ( and the expectation of the Brexit) affect   the U.S. economy. Using all the ISLM and ADAS diagrams illustrate the effect of the Brexit on the U.S. economy. Label all curves and axes. Write formulas for each of the curves what could the U.S. Central Bank do to stabilize the economy Illustrate its actions on ISLM and ADAS diagram. List all monetary policy tools (but do not explain how they work). Suppose the Central Bank does not take any actions. What could the U.S government do to stabilize the economy? Illustrate its actions on the ISLM and ADAS graphs (I Suggest drawing a new set of diagrams rather than using ones form (2)).

What happens to the interest rate monetary policy actions? What happens to the interest rate after fiscal policy actions? Explain the intuition for your result

in which instance does the taxpayer NOT have a dependent?
(1) Marcus is single. Quinta is Marcus's qualifying relative. Marcus may be claimed by his mother, but she is not going to claim him. Quinta is not married. Both Marcus and Quinta are U.S. citizens.
(2) Carol and Carrie are married. Carol is their qualifying child. No one can claim Carl or Carrie on their tax return. Carol married to Paul. Neither Carol or Paul is required to file a tax return. Carol has no income. Paul is filing a joint return with Carol only to claim a refund on taxes withheld. Carl, Carrie, and Paul are all U.S. citizens.
(3) Mai is single. Lee is her qualifying child. No one can claim Mai on their tax return. Lee is married to Sonja. Neither Lee nor Sonja is required to file a tax return. Lee had no Income. Lee and Sonja will not be filing a joint return. Mai, Lee, and Sonja are all U.S
citizens.
(4) Tomas is single. Lucinda is Tomas's qualifying child. No one can claim Tomas on their tax return. Lucinda is not married. Tomas is a U.S citizen. Lucinda is a resident of Mexico.

The Economist collects data each year on the price of a Big Mac in various countries around the world. A sample of McDonald's restaurants in Europe in July 2016 resulted in the following Big Mac prices (after conversion to U.S. dollars).

The mean price of a Big Mac in the U.S. in July 2016 was $5.04. For purposes of this exercise, you can assume it is reasonable to regard the sample as representative of European McDonald's restaurants. Does the sample provide convincing evidence that the mean July 2016 price of a Big Mac in Europe is less than the reported U.S. price? Test the relevant hypotheses using

α = 0.05.

(Hint: See Example 12.12.)

Find the test statistic and P-value. (Use a table or technology. Round your test statistic to one decimal place and your P-value to three decimal places.)

t=  

P-value = 0.000

State the conclusion in the problem context.

We reject H₀. We have convincing evidence that the mean July 2016 price of a Big Mac in Europe is less than the reported U.S. price.

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North Bank has been borrowing in the U.S. markets and lending abroad, thereby incurring foreign exchange risk. In a recent transaction, it issued a one-year $2.00 million CD at 4 percent and is planning to fund a loan in British pounds at 6 percent for a 2 percent expected spread. The spot rate of U.S. dollars for British pounds is $1.450/£1.

a. However, new information now indicates that the British pound will appreciate such that the spot rate of U.S. dollars for British pounds is $1.43/£1 by year-end. Calculate the loan rate to maintain the 2 percent spread.
b. The bank has an opportunity to hedge using one-year forward contracts at 1.46 U.S. dollars for British pounds. Calculate the net interest margin if the bank hedges its forward foreign exchange exposure.
c. Calculate the loan rate to maintain the 2 percent spread if the bank intends to hedge its exposure using the forward rates.

GNP measures: Select one: a. production by U.S. citizens wherever they work in the world. b. the production of both intermediate and final goods and services. c. the same things as GDP, but also includes financial assets. d. goods and services produced by foreign businesses inside U.S. borders. Which option best defines Gross Domestic Product (GDP)? Select one: a. The market value of all the final goods and services produced within a country b. The total amount of sales from U.S. own companies c. The value of all the private spending on products made by corporations d. The total amount of profits earned by U.S. firms from production over the year. determinant demand TF 3: An increase in demand will cause the demand curve for an inferior good to increase (shift right). Select one: True False Which statement is true. In the aggregate sense: Select one: a. Total spending will be larger than total income b. Total income will be larger than total spending c. Total spending + total income will equal the value of the output d. Total spending will equal total income

1. Which of the following would increase prices for U.S. consumers?

​ 2. The larger the MPC:

3. Suppose that the U.S. can make 15 cars or 20 bottles of wine with one year's worth of labor. France can make 10 cars or 18 bottles of wine with one year's worth of labor. From these numbers, we can conclude

4. Which of the following is an example of a pure market economy?

In an article in Marketing Science, Silk and Berndt investigate the output of advertising agencies. They describe ad agency output by finding the shares of dollar billing volume coming from various media categories such as network television, spot television, newspapers, radio, and so forth. (a) Suppose that a random sample of 401 U.S. advertising agencies gives an average percentage share of billing volume from network television equal to 7.49%, and assume that σ equals 1.43 percent. Calculate a 95% confidence interval for the mean percentage share of billing volume from network television for the population of all U.S. advertising agencies. (Round your answers to 3 decimal places.) The 95% confidence interval is [ , ]. (b) Suppose that a random sample of 401 U.S. advertising agencies gives an average percentage share of billing volume from spot television commercials equal to 12.40%, and assume that σ equals 1.52 percent. Calculate a 95% confidence interval for the mean percentage share of billing volume from spot television commercials for the population of all U.S. advertising agencies. (Round your answers to 3 decimal places.) The 95% confidence interval is [ , ]. (c) Compare the confidence intervals in parts a and b. Does it appear that the mean percentage share of billing volume from spot television commercials for U.S. advertising agencies is greater than the mean percentage share of billing volume from network television? Explain. , confidence interval in (b) is totally the confidence interval in (a).

In an article in Marketing Science, Silk and Berndt investigate the output of advertising agencies. They describe ad agency output by finding the shares of dollar billing volume coming from various media categories such as network television, spot television, newspapers, radio, and so forth.

(a) Suppose that a random sample of 405 U.S. advertising agencies gives an average percentage share of billing volume from network television equal to 7.42%, and assume that σ equals 1.44 percent. Calculate a 95% confidence interval for the mean percentage share of billing volume from network television for the population of all U.S. advertising agencies. (Round your answers to 3 decimal places.)

The 95% confidence interval is            [, ].

(b) Suppose that a random sample of 405 U.S. advertising agencies gives an average percentage share of billing volume from spot television commercials equal to 12.40%, and assume that σ equals 1.56 percent. Calculate a 95% confidence interval for the mean percentage share of billing volume from spot television commercials for the population of all U.S. advertising agencies. (Round your answers to 3 decimal places.)

The 95% confidence interval is            [, ].

(c) Compare the confidence intervals in parts a and b. Does it appear that the mean percentage share of billing volume from spot television commercials for U.S. advertising agencies is greater than the mean percentage share of billing volume from network television? Explain.

(Click to select)YesNo , confidence interval in (b) is totally (Click to select)belowabove the confidence interval in (a).

In an article in Marketing Science, Silk and Berndt investigate the output of advertising agencies. They describe ad agency output by finding the shares of dollar billing volume coming from various media categories such as network television, spot television, newspapers, radio, and so forth.

(a) Suppose that a random sample of 396 U.S. advertising agencies gives an average percentage share of billing volume from network television equal to 7.48 percent, and assume that σ equals 1.49 percent. Calculate a 95 percent confidence interval for the mean percentage share of billing volume from network television for the population of all U.S. advertising agencies. (Round your answers to 3 decimal places.) The 95 percent confidence interval is [    ,    ].

(b) Suppose that a random sample of 396 U.S. advertising agencies gives an average percentage share of billing volume from spot television commercials equal to 12.49 percent, and assume that σ equals 1.55 percent. Calculate a 95 percent confidence interval for the mean percentage share of billing volume from spot television commercials for the population of all U.S. advertising agencies. (Round your answers to 3 decimal places.)

The 95 percent confidence interval is [    ,      ].

(c) Compare the confidence intervals in parts a and b. Does it appear that the mean percentage share of billing volume from spot television commercials for U.S. advertising agencies is greater than the mean percentage share of billing volume from network television? Explain. (Click to select)Yes or No , confidence interval in (b) is totally (Click to select)above or below the confidence interval in (a).