Que expresa la música?

Consider the following regression model: xt = + VYt-1+Y2Yt-2 + Et. (a) We cannot use a Durbin-Watson test to study serial correlation in the residuals Et. (b) If the residuals & are serially correlated we can use Newey-West HAC standard errors to correct the biased standard errors. (c) We cannot use the Breusch-Godfrey test for serial correlation in the residuals because the model includes two lags of y. (d) None of the above. Consider the following sample data values. 7 4 6 12 8 15 1 9 13 a) Calculate the range. b) Calculate the sample variance. c) Calculate the sample standard deviation. a) The range is 14 b) The sample variance is (Round to two decimal places as needed.) c) The sample standard deviation is (Round to two decimal places as needed.) Find the L.C.M and H.C.F of 2^4 x 5^3 x 7^2, 2^2 x 3^5 x 7^2, 2^5 x 5^2 x 7^2 Identify the information given to you in the application problem below. Use that information to answer the questions that follow.Round your answers to two decimal places as needed.The equationP=430n11610 represents a computer manufacturer's profit P when n computers are sold.Identify the slope, and complete the following sentence to explain the meaning of the slope.Slope:The company earns $ per computer sold.Find the y-intercept. Write your answer as an Ordered Pair:Complete the following sentence to explain the meaning of the y-intercept.If the company sells ? computers, they will not make a profit. They will lose $?.Find the x-intercept. Write your answer as an Ordered Pair:Complete the following sentence to explain the meaning of the x-intercept.If the company sells ? computers, they will break even. They will earn $?Evaluate P when n=37. Write your answer as an Ordered Pair:Complete the following sentence to explain the meaning of the Ordered PairIf the company sells ? computers, they will earn $?.Find the value of n where P=14190. Write your answer as an Ordered Pair:Complete the following sentence to explain the meaning of the Ordered Pair.The company will earn $? if they sell ? computers. How is Silas and MJ decision the start of a problem for Jamie Find the linear approximation to the equation f(x, y) = 4 ln(x - y) at the point (4,15,0), and use it approximate f(4.1, 15.2) f(4.1, 15.2) .......Make sure your answer is accurate to at least three decimal places, or give an exact answer. If in the future you will recieve $5000 dollars in 10 years and you discount future cash flows by 3% annually, what is the present value of this money today? Please use 5 decimal places in your respon Solve the problem in interval notation. -2x - 41 +32-3 14) Assignment Tasks Details: You are required to research and analyse a real public-listed firm on LSE of your choice, addressing issues as described in specific guidelines relating to the assignment task, in conjunction with the marking rubric. This is an individual assignment, which will require the creation of a Financial Business Plan with simple financial model in Excel, based on a case study and on the analysis of a real public-listed firm on LSE you choose.1) Include a financial ratio analysis using data in the financial statements of the chosen company. Comment on profitability, liquidity, debt and asset activity ratios. Detailed calculations should be included in an appendix; include key findings in a table in the body of the text.2) Provide financial projections for the company, using alternative assumptions to identify the areas that warrant consideration or potential revisions. Use Excel spreadsheets to model the financial projections.3) Include a breakeven analysis using appropriate assumptions based on the business context of the chosen company.4) Critically evaluate the appropriate main sources of finance for the company whether through debt or equity and discuss their requirements for financial projections, advantages, disadvantages and suitability. Include citations for literature review where appropriate.5) Based on your analysis, discuss whether the company would be better off to go for debt or equity financing, if it would like to expand its business. 14Which statement best describes how the author uses the emotions of the characters tohelp structure this excerpt?BThe author creates intensity by showing how the initial surprise each characterfeels turns into anger and bitterness.The author shows the effects of excessive emotion by describing a conflict thatcauses both characters to make false accusations.The author reveals one character's emotions using dialogue and the othercharacter's emotions using description and explanation.The author reveals the characters' underlying affection for each other by showinghow quickly their empty politeness gives way to honesty. 2. Solitary waves (or solitons) are waves that travel great distances without changing shape. Tsunami's are one example. Scientific study began with Scott Russell in 1834, who followed such a wave in a channel on horseback, and was fascinated by it's rapid pace and unchanging shape. In 1895, Kortweg and De Vries showed that the evolution of the profile is governed by the equationJu+udu+u= 0.For this question, suppose u is a solution to the above equation for re R, t>0. Suppose further that u and all derivatives (including higher order derivatives) of u decay to 0 as a [infinity].(a) Let p= u(x, t)da. Show that p is constant in time. [Physically, p is the momentum of the wave.](b) Let E= u(x, t)'da. Show that E is constant in time. [Physically, E is the energy of the wave.](c) (Bonus) It turns out that the KdV equation has infinitely many conserved quantities. The energy and momentum above are the only two which have any physical meaning. Can you find a non-trivial conserved quantity that's not a linear combination of p and E? Scores on an IQ test are normally distributed. A sample of 15 IQ scores had standard deviation s-11. (a) Construct a 90% confidence interval for the population standard deviation . Round the answers to at least two decimal places. (b) The developer of the test claims that the population standard deviation is =14. Does this confidence interval contradict this claim? Explain. Part: 0/2 Part 1 of 2 A90% confidence interval for the population standard deviation is One die is rolled. Let:A = event the die comes up evenB = event the die comes up oddC = event the die comes up 4 or moreD = event the die comes up at most 2E = event the die comes up 3answer as YES or NO(a)Are there any four mutually exclusive events among A, B, C, D and E?(b)Are events C and D mutually exclusive?(c)Are events A , B and D mutually exclusive?(d)Are events A and D mutually exclusive?(e)Are events A , B and C mutually exclusive? Assembly-line balancing operates under two constraints: 1)precedence requirements; and, 2) cycle time restrictions. Selectone: True False The desire for "consumption-smoothing" is based on the economic principle of ? Solve the equation for the variable given. Solve for x Below are the jersey numbers of 11 plenyen randomly selected from a football team. Fed the range, variance, and standard deviation for the given sample dets. What do the results tell us?58 80 38 52 86 22 29 49 66 64 54 A report by the NCAA states that 57.6% of football injuries occur during practices. A head coach trainer claims that thispercentage is too high for his conference, so he randomly selects 36 injuries and finds that 17 occurred during practice.Is his claim correct? Test an appropriate hypothesis. Use a = 0.05.Then after you get the z-score if that is what you are looking how do you interpret in then? Consider a monopoly whose total cost function is TC = 10 + 5Q + 2.5Q2 and whose marginal cost function is MC = 5 + 5Q. The demand function for the firms good is P = 115 - 0.25Q. The firm optimizes by producing the level of output that maximizes profit or minimizes loss. If the firm uses a uniform pricing strategy, then the firm will:A.produce 20 units of output, charge a price of $110, and earn a profit of $1090B.produce 20 units of output, charge a price of $110, and earn a profit of $2200C.produce 56 units of output, charge a price of $71, and earn a profit of $2252D.produce 56 units of output, charge a price of $71, and earn a profit of $3976E.produce 110 units of output, charge a price of $20, and earn a profit of $1090F.produce 110 units of output, charge a price of $20, and earn a profit of $2200 You have a data-set of house prices. One feature in the data belongs to the number of bedrooms. It ranges from 0 to 10 with most of the houses having 2 and 3 bedrooms. You need to remove the outlier in this data-set to build a model later on. Which approach is better?(10 Points)Remove the houses with 0 and more than 8 bedroomsRemove the houses with 0 and more than 6 bedroomsDefine the goal of the model clearly and based on that remove some of the housesDefine the goal of the model clearly and based on that remove some of the houses, and then see removal of which houses helped better with the model