Given Var(X) = 4, Var(Y) = 1, and Var(X+2Y) = 10, What is Var(2X-Y-3)? I know...
Given Var(X) = 4, Var(Y) = 1, and Var(X+2Y) = 10, What is Var(2X-Y-3)?
I know the answer is 15, I'm particularly interested in the specific steps involved with finding the cov(X,Y) in this problem. Please explain in detail, step by step how you come to cov(X,Y) = 0.5 in this equation. Please include any formulas you would need to use to find the cov(X,Y) in this equation.
Homework Answers
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Given Var(X) = 4, Var(Y) = 1, and Var(X+2Y) = 10, What is
Var(2X-Y-3)?
I know...
Suppose Var[X]=4, Var[Y]=1,and Cov [X,Y]= -1 . calculate Var [X-2Y+10]
Suppose Var[X]=4, Var[Y]=1,and Cov [X,Y]= -1 . calculate Var [X-2Y+10]
9. Suppose Var(X] = 4, Var[Y-1, and Cov(X, Y] =-1. Calculate VarX-2Y + 101.
9. Suppose Var(X] = 4, Var[Y-1, and Cov(X, Y] =-1. Calculate VarX-2Y + 101.
Suppose that EX-EY-0, var(X) = var(Y) = 1, and corr(X,Y) = 0.5. (i) Compute E3X -2Y];...
Suppose that EX-EY-0, var(X) = var(Y) = 1, and corr(X,Y) = 0.5. (i) Compute E3X -2Y]; and (ii) var(3X - 2Y) (ii) Compute E[X2]
how to solve the non-linear differential equation implicitly. y' = x + 2y / 2x +...
how to solve the non-linear differential equation implicitly. y' = x + 2y / 2x + y Please show your work step by step. Thanks.
3. Given the following system of linear equations: 2x + y = 16 x + 2y...
3. Given the following system of linear equations: 2x + y = 16 x + 2y = 14 (a) Find the solution using the graphical method. Please show each step and not a screenshot of just the graph on excel
Given y''+2y'=2x+5-e^-2x General solution is: y=c1e^-2x+c2 +1/2(x^2)+2x+1/2(xe^-2x) Solve using the method of undetermined coefficients and show...
Given: y''+2y'=2x+5-e^-2x General solution is: y=c1e^-2x+c2 +1/2(x^2)+2x+1/2(xe^-2x) Solve using the method of undetermined coefficients and show all steps please! I have the form of yp is Ax^2+Bx+Cxe^-2x, and the issue that plagues me is in solving for A B C. I get A=1/2 and I get B=2, but the terms involving C fall off the face of the earth when I substitute y' and y'' of the solution form into the equation, so how can I solve for C? Help...
Solve the general solution of the differential equation y'' -2y'+y= -(e^x)/(2x) , using Variation of Parameters...
Solve the general solution of the differential equation y''
-2y'+y= -(e^x)/(2x) , using Variation of Parameters method. Explain
steps please
point. She the goal of lo v e
Solve the given differential equation by variation of parameters. 2x^2y''+3xy'-y=x^3 sqrt(x)
Solve the given differential equation by variation of parameters. 2x^2y''+3xy'-y=x^3 sqrt(x)
Please answer #2 A and B for the Lightbulb problem "dy", etc. (a). The marginal density, fr (y), of Y. (Be explicit about all cases.) (b). P(X > 0.1 IY 0.5) (c), E(X | Y 0.5) 2x +2y ) dy 3...
Please answer #2 A and B for the Lightbulb problem
"dy", etc. (a). The marginal density, fr (y), of Y. (Be explicit about all cases.) (b). P(X > 0.1 IY 0.5) (c), E(X | Y 0.5) 2x +2y ) dy 3y: if 0 y < 1, and 0 otherwise 0.1 r2x +2 (0.5) (3) 0.5 dx 64/75 2x +2(0.5) (3)0.52 dx- 5/18 2. Let Y be the lifetime, in minutes, of a lightbulb. Assume that the lightbulb has an expected...
For a system with the difference equation: y[n] = -2y[n-1] + x[n] + 2x[n-2], find a.The...
For a system with the difference equation: y[n] = -2y[n-1] + x[n] + 2x[n-2], find a.The impulse response b.The step response
9. Suppose Var(X] = 4, Var[Y-1, and Cov(X, Y] =-1. Calculate VarX-2Y + 101.
Suppose that EX-EY-0, var(X) = var(Y) = 1, and corr(X,Y) = 0.5. (i) Compute E3X -2Y]; and (ii) var(3X - 2Y) (ii) Compute E[X2]
Solve the general solution of the differential equation y''
-2y'+y= -(e^x)/(2x) , using Variation of Parameters method. Explain
steps please
point. She the goal of lo v e
Please answer #2 A and B for the Lightbulb problem
"dy", etc. (a). The marginal density, fr (y), of Y. (Be explicit about all cases.) (b). P(X > 0.1 IY 0.5) (c), E(X | Y 0.5) 2x +2y ) dy 3y: if 0 y < 1, and 0 otherwise 0.1 r2x +2 (0.5) (3) 0.5 dx 64/75 2x +2(0.5) (3)0.52 dx- 5/18 2. Let Y be the lifetime, in minutes, of a lightbulb. Assume that the lightbulb has an expected...
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