Is there any reason to believe that any measure of loudness (e.g. sound pressure) might have an upper boundary, similar to upper limit (c) of the speed of mass?

Viewing

As part of its eco-friendly campaign, a company has asked for your advice whether installing a wind turbine will generate enough electricity to be cost effective. To produce enough electricity, the average wind speed needs to be least 12 mph. Based on historical data from the past 5 years, 41 days were randomly chosen and their wind speed measurements were written down. This resulted in an average wind speed of 15 mph with a standard error of 0.6872 mph. A histogram of these wind speeds yielded a right-skewed shape.

(a) Are the conditions met for constructing a confidence interval? (Check all that apply.)

It is reasonable to assume that weather conditions on the various days were independent of each other.The Nearly Normal condition is met.None of the conditions are met.The days were randomly chosen.

(b) Find the 98% confidence interval for the true average wind speed. (Use 4 decimal places)
(  ,  )

(c) Does the above confidence interval provide evidence that a wind turbine would be cost effective?

Yes, since the lower boundary is greater than the required wind speed of 12 mph, there is evidence the true average wind speed is greater than 12 mph.No, since the lower boundary is greater than the required wind speed of 12 mph, there is evidence the true average wind speed is greater than 12 mph.    No, since the lower boundary is less than the required wind speed of 12 mph, it is possible the true average wind speed is less than 12 mph.Yes, since the lower boundary is less than the required wind speed of 12 mph, it is possible the true average wind speed is less than 12 mph.

Viewingv

As part of its eco-friendly campaign, a company has asked for your advice whether installing a wind turbine will generate enough electricity to be cost effective. To produce enough electricity, the average wind speed needs to be least 12 mph. Based on historical data from the past 5 years, 41 days were randomly chosen and their wind speed measurements were written down. This resulted in an average wind speed of 15 mph with a standard error of 0.6872 mph. A histogram of these wind speeds yielded a right-skewed shape.

(a) Are the conditions met for constructing a confidence interval? (Check all that apply.)

It is reasonable to assume that weather conditions on the various days were independent of each other.The Nearly Normal condition is met.None of the conditions are met.The days were randomly chosen.

(b) Find the 98% confidence interval for the true average wind speed. (Use 4 decimal places)
(  ,  )

(c) Does the above confidence interval provide evidence that a wind turbine would be cost effective?

Yes, since the lower boundary is greater than the required wind speed of 12 mph, there is evidence the true average wind speed is greater than 12 mph.No, since the lower boundary is greater than the required wind speed of 12 mph, there is evidence the true average wind speed is greater than 12 mph.    No, since the lower boundary is less than the required wind speed of 12 mph, it is possible the true average wind speed is less than 12 mph.Yes, since the lower boundary is less than the required wind speed of 12 mph, it is possible the true average wind speed is less than 12 mph.

Covered Interest Arbitrage: The spot rate is currently: 1.6131 $/pound US interest rate 1.0% The 6 month forward is: 1.6022 $/pound UK interest rate 2.5% a.) Is Arbitrage possible? Use the forward as a percentage to show why. What items do you compare to arrive at your answer? Explain fully. b.) Us the forward as a percentage in a sentence that correctly describes what it means. c.) How to Profit. For this part show how the arbitrage would be carried out. What is the excess profit that can be made by carrying out the covered interest arbitrage? Assume that you start with 1.0 million dollars. d.) In which direction would the four numbers at the beginning of this problem need to move to reduce or eliminate the arbitrage? e.) If all numbers are fixed except for the UK interest rate, what would the UK interest rate need to be to totally eliminate the arbitrage?

A plant to make 30 000 t y^-1 of glycerine and comprising 11 process steps was built in the UK five years ago, with a total investment cost of GBP 48 million. A new plant for the production of 50 000 t y^-1 of glycerine is now to be built near Ankara, Turkey. Because of more stringent international legislation, new glycerine plants require additional pollution control equivalent to 3 further process steps. Estimate the total investment cost in TRY (Turkish Lira) of such a plant using the data below.

Scale factor = 0.6

17. The real GDP growth between 2017 and 2018 was _____. A. 5.93% B. 6.16% C. 6.57% D. None of the above/not enough information

18. Using 2018 as the base year, the GDP deflator in 2017 was _____. A. 95.73 B. 100 C. 104.46 D. None of the above/not enough information

19. Using 2018 as the base year, the GDP deflator in 2018 was _____. A. 95.73 B. 100 C. 104.46 D. None of the above/not enough information

20. A market basket: A. is a tool devised to track how changing prices affect consumers. B. includes all the goods and services produced in an economy. C. includes all the goods and services consumed in an economy, including imports. D. includes all the goods and services consumed in an economy, including net exports.  

21. A price index: A. measures how much the cost of a market basket has risen or fallen relative to the cost in a base time period. B. summarizes the changes in the cost of living for only rural consumers. C. allows us to see clearly the changes in the cost of a market basket daily. D. is generally only used with consumer goods and services

22. When the CPI increases from one year to the next: A. the cost of living has decreaseD. B. deflation has occurreD. C. people need to spend more money to buy the same amount of goods as the previous year. D. All of these statements are true.

23. When deflation occurs, the purchasing power of money increases. A. True B. False C. Uncertain Consider the following information regarding the CPI for an economy: Year CPI 2000 150 2001 159 2002 181 2003 184

24. The inflation rate between 2000 and 2001 was: A. 5.66% B. 6.00% C. 9.00% D. none of the above

25. In this economy, deflation: A. occurred between 2000 and 2001. B. occurred between 2001 and 2002. C. occurred between 2002 and 2003. D. did not occur between any of the time periods stated above.

26. In 2005, the minimum wage was $5.15 and the CPI in 2005 was 195.3. The CPI in 2018 was 250.5. Thus, the real minimum wage in 2018 dollars was _____. A. $4.02 B. $6.61 C. $12.90 D. None of the above/not enough information  

27. In 2018, the minimum wage was $7.25. Which of the following statements are correct? A. The purchasing power of the minimum wage has increased since 2005. B. The purchasing power of the minimum wage has decreased since 2005. C. The purchasing power of the minimum wage has not changed since 2005. D. One cannot say whether the purchasing power of the minimum wage has increased or decreased since 2005.

What happened that caused the popes to move to Avignon? What was the Great Schism? How did the Avignon Papacy and the Babylonian Captivity affect the Church? How did it affect Christians?

Compare the welfare effect of the UK leaving the EU Single market versus the Customs union