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Pbe: X X, id a. Xi Let T(Y. ) dfo) is locet.n Paronmctr. or Ce nau...
4) Let Xi , X2, . . . , xn i id N(μ, σ 2) RVs. Consider the problem of testing Ho : μ- 0 against H1: μ > 0. (a) It suffices to restrict attention to sufficient statistic (U, v), where U X and V...
4) Let Xi , X2, . . . , xn i id N(μ, σ 2) RVs. Consider the problem of testing Ho : μ- 0 against H1: μ > 0. (a) It suffices to restrict attention to sufficient statistic (U, v), where U X and V S2. Show that the problem of testing Ho is invariant under g {{a, 1), a e R} and a maximal invariant is T = U/-/ V. (b) Show.that the distribution of T has MLR,...
(1 point) Let F = xi+ (x + y) 3+ (x – y+z) k. Let the...
(1 point) Let F = xi+ (x + y) 3+ (x – y+z) k. Let the line l be x = 4t – 3, y = — (5 + 4t), z = 2 + 4t. = (20, Yo, zo) where F is parallel to l. (a) Find a point P P= Find a point Q = (x1, Yı, z1) at which F and I are perpendicular. Q - Give an equation for the set of all points at which F...
Let T є L(C3) be defined by T(r, y, z)-(y-2-2c, z-2-2y,1-2y-22). (a) Is span((1,1,1)) invariant under...
Let T є L(C3) be defined by T(r, y, z)-(y-2-2c, z-2-2y,1-2y-22). (a) Is span((1,1,1)) invariant under T? (b) Is U = { ( (c) Is U = {(x, y, z) : x + y + z = 0} invariant under T? (d) Is λ 2 an eigenvalue of T? Is T-21 injective? (e) Find all eigenvectors of T associated to the eigenvalue λ =-3. 4. r, y,r-y) : x, y E C} invariant under T?
1. Let Xi,X2,.... Xn be an id sample from a Uniform(0,6) distribution. Let X(n) be the...
1. Let Xi,X2,.... Xn be an id sample from a Uniform(0,6) distribution. Let X(n) be the maximum order statistic, and let UX()/e. a) Find the CDF of U b) Is U a pivotal quantity? why or why not? c) Use U to construct a 95% CI for
Exercise 11. Let Xi,Y be random variables with joint PDF fxi.Y. Let X2,Y be random variables...
Exercise 11. Let Xi,Y be random variables with joint PDF fxi.Y. Let X2,Y be random variables with joint PDF fXyXy Let T: R2 → R2 and let S: R2 → R2 so that ST(x,y) = (z, y) and TS(z, y)-(x,y) for every (x,y) є R2. Let J(z, y) denote the determinant of the Jacobian of S at (x,y). Assume that (X2,Y) = T(X1Ύǐ). Using the change of variables formula from multivariable calculus, show that fx2 x2 (x, y)-fx .yi (S(x,...
(1 point) xi(t) Let x(t) = be a solution to the system of differential equations: x2(t)...
(1 point) xi(t) Let x(t) = be a solution to the system of differential equations: x2(t) xy(t) x'z(t) –6 x (1) 2 xi(t) x2(t) 3 x2(t) = If x(0) find x(t). 2 3 Put the eigenvalues in ascending order when you enter xi(t), x2(t) below. xi(t) = exp( t)+ expo t) x2(t) = exp( t)+ expl t)
(a) If var[X o2 for each Xi (i = 1,... ,n), find the variance of X = ( Xi)/n. (b) Let the continuous random variable Y...
(a) If var[X o2 for each Xi (i = 1,... ,n), find the variance of X = ( Xi)/n. (b) Let the continuous random variable Y have the moment generating function My (t) i. Show that the moment generating function of Z = aY b is e*My(at) for non-zero constants a and b ii. Use the result to write down the moment generating function of W 1- 2X if X Gamma(a, B)
(a) If var[X o2 for each Xi (i...
Parts e-h Suppose that (Xi,A), , (XN,Yv) denotes a random sample. Let Si = a+bX, T, = c+ dY,, where a, b, c and with the analogous expressions for Y, ST. Let σΧΥ ρΧΥ-Oxy/(ơxdY), with the analogous ex...
Parts e-h
Suppose that (Xi,A), , (XN,Yv) denotes a random sample. Let Si = a+bX, T, = c+ dY,, where a, b, c and with the analogous expressions for Y, ST. Let σΧΥ ρΧΥ-Oxy/(ơxdY), with the analogous expressions for S, T Σ Xi, and σ. NLī Σί (Xi-X)2, -, Σ (Xi-X)(X-Y), and let d are constants. Let X = (a) Show that σ (b) Show that 37, b d ƠXY. (c) Show that ps- pxy. (d) How do the above...
Question # 4 Let x(t) u(t) be a signal, let h(t) = e -5tu(t) be a...
Question # 4 Let x(t) u(t) be a signal, let h(t) = e -5tu(t) be a linear time invariant system (a) Sketch x(t) and h(t) (b) Find the mathematival expression of output of the system y(t) by using convolution. (c) Sketch y(t)
Let x(t) be the signal below: Sketch the following: (a) xi(t) = x(1 – t) (b)...
Let x(t) be the signal below: Sketch the following: (a) xi(t) = x(1 – t) (b) cz(t) = -x(t – 1) (c) 23(t) = $.- (T)dt (d) x4(t) = (t+1)x(t) () 25(t) = dr(t).
4) Let Xi , X2, . . . , xn i id N(μ, σ 2) RVs. Consider the problem of testing Ho : μ- 0 against H1: μ > 0. (a) It suffices to restrict attention to sufficient statistic (U, v), where U X and V S2. Show that the problem of testing Ho is invariant under g {{a, 1), a e R} and a maximal invariant is T = U/-/ V. (b) Show.that the distribution of T has MLR,...
(1 point) Let F = xi+ (x + y) 3+ (x – y+z) k. Let the line l be x = 4t – 3, y = — (5 + 4t), z = 2 + 4t. = (20, Yo, zo) where F is parallel to l. (a) Find a point P P= Find a point Q = (x1, Yı, z1) at which F and I are perpendicular. Q - Give an equation for the set of all points at which F...
Let T є L(C3) be defined by T(r, y, z)-(y-2-2c, z-2-2y,1-2y-22). (a) Is span((1,1,1)) invariant under T? (b) Is U = { ( (c) Is U = {(x, y, z) : x + y + z = 0} invariant under T? (d) Is λ 2 an eigenvalue of T? Is T-21 injective? (e) Find all eigenvectors of T associated to the eigenvalue λ =-3. 4. r, y,r-y) : x, y E C} invariant under T?
1. Let Xi,X2,.... Xn be an id sample from a Uniform(0,6) distribution. Let X(n) be the maximum order statistic, and let UX()/e. a) Find the CDF of U b) Is U a pivotal quantity? why or why not? c) Use U to construct a 95% CI for
Exercise 11. Let Xi,Y be random variables with joint PDF fxi.Y. Let X2,Y be random variables with joint PDF fXyXy Let T: R2 → R2 and let S: R2 → R2 so that ST(x,y) = (z, y) and TS(z, y)-(x,y) for every (x,y) є R2. Let J(z, y) denote the determinant of the Jacobian of S at (x,y). Assume that (X2,Y) = T(X1Ύǐ). Using the change of variables formula from multivariable calculus, show that fx2 x2 (x, y)-fx .yi (S(x,...
(1 point) xi(t) Let x(t) = be a solution to the system of differential equations: x2(t) xy(t) x'z(t) –6 x (1) 2 xi(t) x2(t) 3 x2(t) = If x(0) find x(t). 2 3 Put the eigenvalues in ascending order when you enter xi(t), x2(t) below. xi(t) = exp( t)+ expo t) x2(t) = exp( t)+ expl t)
(a) If var[X o2 for each Xi (i = 1,... ,n), find the variance of X = ( Xi)/n. (b) Let the continuous random variable Y have the moment generating function My (t) i. Show that the moment generating function of Z = aY b is e*My(at) for non-zero constants a and b ii. Use the result to write down the moment generating function of W 1- 2X if X Gamma(a, B)
(a) If var[X o2 for each Xi (i...
Parts e-h
Suppose that (Xi,A), , (XN,Yv) denotes a random sample. Let Si = a+bX, T, = c+ dY,, where a, b, c and with the analogous expressions for Y, ST. Let σΧΥ ρΧΥ-Oxy/(ơxdY), with the analogous expressions for S, T Σ Xi, and σ. NLī Σί (Xi-X)2, -, Σ (Xi-X)(X-Y), and let d are constants. Let X = (a) Show that σ (b) Show that 37, b d ƠXY. (c) Show that ps- pxy. (d) How do the above...
Question # 4 Let x(t) u(t) be a signal, let h(t) = e -5tu(t) be a linear time invariant system (a) Sketch x(t) and h(t) (b) Find the mathematival expression of output of the system y(t) by using convolution. (c) Sketch y(t)
Let x(t) be the signal below: Sketch the following: (a) xi(t) = x(1 – t) (b) cz(t) = -x(t – 1) (c) 23(t) = $.- (T)dt (d) x4(t) = (t+1)x(t) () 25(t) = dr(t).
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