int onodqolot o gnnu noiesupexamine profit as a percentage of stockholder equity. A random sample of 31 retail stocks such asHow profitable are different sectors of the stock market? One way to answer such a question is toToys 'R' Us, Best Buy, and Gap was studied for x1, profit as a percentage of stockholder equity.The result was sample mean of 14.7. A random sample of 36 utility (gas and electric) stocks such133 80 113.s Boston Edison, Wisconsin Energy, and Texas Utilities was studied for x2, profit as anercentage of stockholder equity. The result was a sample mean of 9.8. Assumethat gi = 3.4 and 02 = 3.8. N, = 31 >X,=TH:1,0,=3.4, n2= 36, E,=9.8,0aC.L:0.95At the 95% level of confidence, does it appear that the profit as a percentage of stockholderequity for retail stocks is higher than that for utility stocks? (Show your confidence in intervalnotation and show your interpretation)2 Sampz%3D3.1751 < M,- Azs 6.6243We are 95% level Conzidence that the ProfitJol letail &toCKs ioeCentage Stockholder equitya than thatfor utility stocks ·

From the given information, n1=31x¯1=14.7σ1=3.4n2=36x¯2=9.8σ2=3.8 Confidence level is 0.95.…

How profitable are different sectors of the stock market? One way to answer such a question is to examine profit as a percentage of stockholder equity. A random sample of 31 retail stocks such as Toys 'R' Us, Best Buy, and Gap was studied for x1, profit as a percentage of stockholder equity. The result was sample mean of 14.7. A random sample of 36 utility (gas and electric) stocks such os Boston Edison, Wisconsin Energy, and Texas Utilities was studied for x2, profit as a 2 Samp percentage of stockholder equity. The result was a sample mean of 9.8. Assume that gi = 3.4 and o2 = 3.8. N, = 31 ,=TH:1,0,=3.4, n2= 36, En=9.8,0 %3D

How profitable are different sectors of the stock market? One way to answer such a question is to examine profit as a percentage of stockholder equity. A random sample of 31 retail stocks such as Toys 'R' Us, Best Buy, and Gap was studied for x1, profit as a percentage of stockholder equity. The result was sample mean of 14.7. A random sample of 36 utility (gas and electric) stocks such os Boston Edison, Wisconsin Energy, and Texas Utilities was studied for x2, profit as a 2 Samp percentage of stockholder equity. The result was a sample mean of 9.8. Assume that gi = 3.4 and o2 = 3.8. N, = 31 ,=TH:1,0,=3.4, n2= 36, En=9.8,0 %3D

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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