() Find the covariance of X and Y

Q: Advanced Calculus 17-22 Use appropriate forms of the chain rule to find az/au and az/av. 17. z =…

A: Given that: z=8x2y-2x+3y,    x=uv,    y=u-v To calculate ∂z∂u Apply chain rules of derivatives,…

Q: You are conducting a test of independence for the claim that there is an association between the row…

A: Solution: Hypothesis:  There is no association between row and column variable.  There is…

Q: E (u, v) = (u – v², u² + 1, v²) |

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Q: (x, y) = (0,0) %3| = {r3+y3' 0, (b) f (x, y) (x, y) # (0,0)

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Q: Let X and Y denote be as follows: E(X) = 10, E(X2) = 125, E(Y) = 20, Var(Y) =100 , and Var(X+Y) =…

A: Given data E(X) = 10, E(X2) = 125, E(Y) = 20, Var(Y) =100 , and Var(X+Y) = 155.  W = 2X-Y and  T =…

Q: If cov (x,y) = 0 is zero, then is ______ correlation. Select one: a. positive b. negative c. zero d.…

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Q: Evaluate (D4 + 3D³ + 2D²)y = 0 a. y = C1 + C2x+C3e¬* + C4e' b. y = C1 + C2x+C3e¬* C.y = C1x +…

A: To solve the given differential equation.

Q: min z= A x, +B X2 s.t. X+*2 S6, X1 2 4, X1, X2 2 0.

A: NOTE: Refresh your page if you can't see any equations. . subject to  After introducing slack,…

Q: What is the solution of the given ODE * xy' + y = √x

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Q: U, +u, =0, 0<x<∞ 0<y<b ( u(0, y) = f(y), u(00, y) = 0 , , u(x,0) = 0 u(x,b) =0

A: Solving the partial differential equation by separation of variables.

Q: (D6 – 3D5 + 3D4 – D³)y = 12 A. y = c1 + C2x + e*(c3 + c4x + c5x²) – 12 B. y = c, + c2x +e¬*(c3 + c4x…

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Q: (a) Find the auto correlation function of the sum o, (t)= X(t) + Y(t)

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Q: The functions Inx and Inx are linearly independent functions.

A: two functions are y1=lnx,       y2=lnx3 find its derivative y1'=ddxlnx,        y2'=ddxlnx3 y1'=1x,…

Q: Find the covariance between x and y

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Q: 2. Assume that you are a policy analyst. Your staff has collected cross-sectional data on the…

A: Here, we have the cross sectional data on the determinants of average length of stay in various…

Q: Find E(X) E(Y) covariance(X,Y) var(X+Y) X 6 X 2 Y =10 0.3 0.3 Y = 5 0.4

A: We want to find E(X), E(Y), V(X), V(Y) and Cov(X,Y)

Q: z - j

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Q: x°y "у" , у(1) — 0, у"(1) — 1 + ху — у — 0, у(1) — 1, У"(1) — 1

A: x3y"' +xy' -y=0⇒D(D-1)(D-2) +D -1 =0 where we consider z=logxon solving cubic equation we…

Q: EXER 4.7 | LINEAR ALGEBRA Find the desired determinant. d e f a b C Ix-a y-b z-cl a b C Given that d…

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Q: e) u(x,y) =/(x2 – y²) %3D

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Q: Are e^x, xe^x, and x^2e^x linearly independent? If so, show it, if not, find a linear combination…

A: To check for the linearly independent of given functions,  we use the definition of Wronskian.

Q: Assume that traffic flows freely through the intersections A, B, C, and D. The values x,, xr,, X2,…

A: Assume that traffic flows at a rate of 220 vehicles per hour on the stretch of road between…

Q: Advanced Calculus 17-22 Use appropriate forms of the chain rule to find az/au and az/av. 20. z = 3x…

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Q: Graph the points z=x+iy in |z|

A: Given z=x+iy The graph of z=x+iy  and |Z| is

Q: (b) Find the Jacobian matrix ду əx where y [1+1+2+3 -x1x2x3 -[1+5+ = -B X2 I3 and x =

A: (b) Given y=1+x1+x2+x3-x1 x2 x3 and x=x1x2x3   To Find: The Jacobian Matrix ∂y∂x

Q: fos (2y)Sinlayldy

A: Given integral is ∫cos2y2⋅sin2ydy Substitute cos2y=u ⇒−2sin2ydy=du⇒sin2ydy=−du2 Hence, the integral…

Q: X(t, X) = e

A: From the available information, The probability density function is, The total  probability density…

Q: xy' + y = √x

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Q: // (x+ y) dA, A = {(x; y) E R² : x € [0, 1), y E [2x, 2V]}; A

A: To evaluate the given double integral

Q: 4. Determin dx x2 + x

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Q: 3= b+x Linearization

A: Given is  y=ax/(b+x)

Q: Sax Show that S,y = E(, -2)Y, Show that Cov(Y,F) = for all i. Use part a and b and linearity of…

A: According to our guidelines we are solving only first three sub-parts of a question and the rest…

Q: Exercise 4. (a) x² (5.7) ~ Gamma(?,?), (b) x²(8) ~ Gamma(?,?), (c) - Gamma(4, 3) ~ x² (?)

A: To find:  (a) x² (5.7) ~ Gamma(?,?) (b) x²(8) ~ Gamma(?,?) (c) } Gamma(4,3) ~ x²(?)

Q: I R w I R www I I Use wye-dell I I R www I

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Q: {(x,y): y=e}; {(x,y):y2e²}; (x,y): xy ≥ 1, x>0, y > 0.

A: This is a question from a real-valued function.

Q: 2. Jui (x) + Juo, (x) = 2Y Jv (X) 2. Jv-iCX) Juo, (X) Jv(x)

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Q: y = e-3* (Acos 5x – Bsin 5x) + Cx; A, B and C are arbitrary constants

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Q: Interpreting r  For the same two variables described in Exercise 1, if we find that r = 0, does that…

A: The data shows the body temperature (°C) and head circumference (cm) of 25 measurements. The…

Q: The joint pmf of X and Y is given in the following table. y P(x.v) 1 0.02 0.06 0.03 2 0.07 0.15 0.20…

A: Solution

Q: x2 – h(x) = (v2)** A.h' (x) = 2x In2(V2)* B. h'(x) = x In2(v2)* %3D x² %3D C. h'(x) = 2 Inx(v2)* D.…

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Q: Consider the model Y; = Bo + B1 X1,j + B2 X2,i + u¡ where X2,i is not observable. However, you have…

A: There may, sometimes, be errors in measurement of variables. The variables are then said to be…

Q: (h) Find Katz centrality. a e b d

A: Given figure is Related matrix is A=0100010101100101010100110111000101110111010101110 So eigenvalue…

Q: (x²ex²+y f(x,y) = } x²+y² 0, (x, y) # (0,0) (x, y) = (0,0)

A: In the given question we have to check  the limit of the function at the point (0,0). Concept: In…

Q: F(x,y) =1/8 (6-x-y) 0<x<2,2<y<4 = 0 othérwise How to Calculate Var(X), Var(Y), Cov(X, Y) and…

A: We have joint pdf of X and Y so we have to find Variance of X and Y also we have to find covariance…

Q: 5e- 2e- |-7e-/ X = Find dX/dt of Matrix:

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Q: 7- Deteremin all Max and min value of y= xe* +3e³

A: The given function is y=xex + 3e3. Determine all maximum and minimum values.

Q: u(0,t) = u(3,t)=0, t≥0 x 0<x<1 u(x,0) = 2-x 1<x<3

A: