![Assume X = [X1, X2, X3, X4]T ~ N(µ, C). Consider [1 2 2 6 7 8. µ = E[X] C= 3 7 11 12 4 8 12 16 o What is the pdf of px,(x) ?](http://img.homeworklib.com/questions/9c19ee60-aa75-11eb-9cd0-87821a54eb00.png?x-oss-process=image/resize,w_560)
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![FC8,-X))= F(x3)-(EM) E voriaure of X Cez =6] E Covoriance (, Y3) since C23=(32=7 From Covor3ance Matrix E(Xex]= 2. We tuow EC](http://img.homeworklib.com/questions/8941a6f0-aa78-11eb-ba45-bfd929e9390d.png?x-oss-process=image/resize,w_560)
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Assume X = [X1, X2, X3, X4]T ~ N(µ, C)....
Suppose that X1, X2, X3 and X4 are independent Poisson where E[X1] = lab E[X2] =...
Suppose that X1, X2, X3 and X4 are independent Poisson where E[X1] = lab E[X2] = 11 – a)b E[X3] = da(1 – b) E[X2] = X(1 — a)(1 – b) for some a and b between 0 and 1. Let S = X1 + X2+X3+X4, R= X1 + X2 and C = X1 + X3. (a) Find P(R = 10) (b) Find P(X1 = 6 S = 16 and R= 12). (c) Suppose we want to condition on the...
Additional Problem A researcher collected data on Y and four X-variables: X1, X2, X3, X4, and he ...
Additional Problem A researcher collected data on Y and four X-variables: X1, X2, X3, X4, and he wants to obtain a regression model. However, he is not sure if all the four X-variables should be included in the model. He provides you with the information shown below, namely, the SSR obtained when Y was regressed on each subset of X-variables. Also given: SST-100, and that the sample size is n 12. Your task Apply the Forward-Stepwise selection method, with a-to-enter-...
11. Let Z = (X1,X2, X3)T be a portfolio of three assets. E(X) 0.50. E(X2-1.5. E(X3) = 2.5, VAR(X)...
11. Let Z = (X1,X2, X3)T be a portfolio of three assets. E(X) 0.50. E(X2-1.5. E(X3) = 2.5, VAR(X)-2, VAR(X2)-3, Var(Xs)-5·PX1.x2-0.6 and X1 and X2 are idependent of X3 (a) Find E(0.3xi +0.3X2 +0.4X3) and Var(0.3X1 +0.3X2 +0.4Xs) (b) Find P[0.3X1 +0.3x2 + 0.4X3 <2). Since z-table isn't provided, just write down the (c) Find the covariance between a portfolio that allocates 1/3 to each of the three assets and a portfolio that allocates 1/2 to each of the first...
Find the DTFT a. x1[n]=(.3)^nµ[n] b. x2[n]=(.3)µ[n-1] c. x3[n]=(.3)^n(µ[n]-µ[n-10]) d. x4[n]=(.3)^n(µ[n-1]-µ[n-10]) e. x5[n]=δ[n] f. x6[n]=δ[n-1] g....
Find the DTFT a. x1[n]=(.3)^nµ[n] b. x2[n]=(.3)µ[n-1] c. x3[n]=(.3)^n(µ[n]-µ[n-10]) d. x4[n]=(.3)^n(µ[n-1]-µ[n-10]) e. x5[n]=δ[n] f. x6[n]=δ[n-1] g. x7[n]=δ[n]+3δ[n-1]+7δ[n-3]
Problem 2. This is adapted from our textbook. Let X -[x1,x2, x3,x4 be a set of...
Problem 2. This is adapted from our textbook. Let X -[x1,x2, x3,x4 be a set of four monetary prizes, where 0 < x1 < x2 < 13 < x4. Stowell claims he is an expected utility maximizer. He is observed to choose the lottery π-(1, 1, 1, ) over the lottery π,-(0Ί, , Ỉ ). Based 1 11 7 4 24 24) Based on that observation, can you conclude that he is truly an expected utility maximizer, as he [10...
Consider the following linear transformation T: R5 → R3 where T(X1, X2, X3, X4, X5) =...
Consider the following linear transformation T: R5 → R3 where T(X1, X2, X3, X4, X5) = (*1-X3+X4, 2X1+X2-X3+2x4, -2X1+3X3-3x4+x5) (a) Determine the standard matrix representation A of T(x). (b) Find a basis for the kernel of T(x). (c) Find a basis for the range of T(x). (d) Is T(x) one-to-one? Is T(x) onto? Explain. (e) Is T(x) invertible? Explain
Let X1,X2,X3,X4 be observations of a random sample of n-4 from the exponential distribution having mean...
Let X1,X2,X3,X4 be observations of a random sample of n-4 from the exponential distribution having mean 5, What is the mgf of Y-X1 X2 X3 X4? 4. 5. What is the distribution of Y? What is the mgf of the sample mean X = X+X+Xa+X1 ? 6. 7. What is the distribution of the sample mean?
Please show work Consider the following linear transformation T: RS → R3 where T(X1, X2, X3,...
Please show work
Consider the following linear transformation T: RS → R3 where T(X1, X2, X3, X4, Xs) = (x1-X3+X4, 2x1+x2-X3+2x4, -2x1+3x3-3x4+xs) (a) Determine the standard matrix representation A of T(x). (b) Find a basis for the kernel of T(x). (c) Find a basis for the range of T(x). (d) Is T(x) one-to-one? Is T(x) onto? Explain. (e) Is T(x) invertible? Explain
3. Description of each X and data for 27 franchise stores are given below The data (X1, X2, X3, X4, X5, X6) are for each franchise store. X1 annual net sales/$1000 X2 number sq. ft/1000 X3 - inv...
3. Description of each X and data for 27 franchise stores are given below The data (X1, X2, X3, X4, X5, X6) are for each franchise store. X1 annual net sales/$1000 X2 number sq. ft/1000 X3 - inventory I$1000 X4- amount spent on advertising /$1000 X5 size of sales district/1000 families X6 number of competing stores in distric X1 X2 X3 X4 X5 X6 231 3 294 8.2 8.2 11 156 2.2 232 6.9 4.1 12 10 0.5 149 3...
Consider the linear system described by: 10 x1 + 9x2 +8 x3 + 8 x4100 10 x1 + 9 x2 +8x3 6 x4 70 6x...
Consider the linear system described by: 10 x1 + 9x2 +8 x3 + 8 x4100 10 x1 + 9 x2 +8x3 6 x4 70 6x, + 10x2+9x3 +8x4-50 6 x1 10 x2 +8x3 +0.01 x420 Write a Matlab script to: a) Find the solution (x) b) Find the: codon number of the sysicern c) Find the number of unreliable digits in the answer d) Find a value for b such that x3 0 (Hint: b1 decreases from 100, use increments...
Suppose that X1, X2, X3 and X4 are independent Poisson where E[X1] = lab E[X2] = 11 – a)b E[X3] = da(1 – b) E[X2] = X(1 — a)(1 – b) for some a and b between 0 and 1. Let S = X1 + X2+X3+X4, R= X1 + X2 and C = X1 + X3. (a) Find P(R = 10) (b) Find P(X1 = 6 S = 16 and R= 12). (c) Suppose we want to condition on the...
Additional Problem A researcher collected data on Y and four X-variables: X1, X2, X3, X4, and he wants to obtain a regression model. However, he is not sure if all the four X-variables should be included in the model. He provides you with the information shown below, namely, the SSR obtained when Y was regressed on each subset of X-variables. Also given: SST-100, and that the sample size is n 12. Your task Apply the Forward-Stepwise selection method, with a-to-enter-...
11. Let Z = (X1,X2, X3)T be a portfolio of three assets. E(X) 0.50. E(X2-1.5. E(X3) = 2.5, VAR(X)-2, VAR(X2)-3, Var(Xs)-5·PX1.x2-0.6 and X1 and X2 are idependent of X3 (a) Find E(0.3xi +0.3X2 +0.4X3) and Var(0.3X1 +0.3X2 +0.4Xs) (b) Find P[0.3X1 +0.3x2 + 0.4X3 <2). Since z-table isn't provided, just write down the (c) Find the covariance between a portfolio that allocates 1/3 to each of the three assets and a portfolio that allocates 1/2 to each of the first...
Problem 2. This is adapted from our textbook. Let X -[x1,x2, x3,x4 be a set of four monetary prizes, where 0 < x1 < x2 < 13 < x4. Stowell claims he is an expected utility maximizer. He is observed to choose the lottery π-(1, 1, 1, ) over the lottery π,-(0Ί, , Ỉ ). Based 1 11 7 4 24 24) Based on that observation, can you conclude that he is truly an expected utility maximizer, as he [10...
Consider the following linear transformation T: R5 → R3 where T(X1, X2, X3, X4, X5) = (*1-X3+X4, 2X1+X2-X3+2x4, -2X1+3X3-3x4+x5) (a) Determine the standard matrix representation A of T(x). (b) Find a basis for the kernel of T(x). (c) Find a basis for the range of T(x). (d) Is T(x) one-to-one? Is T(x) onto? Explain. (e) Is T(x) invertible? Explain
Let X1,X2,X3,X4 be observations of a random sample of n-4 from the exponential distribution having mean 5, What is the mgf of Y-X1 X2 X3 X4? 4. 5. What is the distribution of Y? What is the mgf of the sample mean X = X+X+Xa+X1 ? 6. 7. What is the distribution of the sample mean?
Please show work
Consider the following linear transformation T: RS → R3 where T(X1, X2, X3, X4, Xs) = (x1-X3+X4, 2x1+x2-X3+2x4, -2x1+3x3-3x4+xs) (a) Determine the standard matrix representation A of T(x). (b) Find a basis for the kernel of T(x). (c) Find a basis for the range of T(x). (d) Is T(x) one-to-one? Is T(x) onto? Explain. (e) Is T(x) invertible? Explain
3. Description of each X and data for 27 franchise stores are given below The data (X1, X2, X3, X4, X5, X6) are for each franchise store. X1 annual net sales/$1000 X2 number sq. ft/1000 X3 - inventory I$1000 X4- amount spent on advertising /$1000 X5 size of sales district/1000 families X6 number of competing stores in distric X1 X2 X3 X4 X5 X6 231 3 294 8.2 8.2 11 156 2.2 232 6.9 4.1 12 10 0.5 149 3...
Consider the linear system described by: 10 x1 + 9x2 +8 x3 + 8 x4100 10 x1 + 9 x2 +8x3 6 x4 70 6x, + 10x2+9x3 +8x4-50 6 x1 10 x2 +8x3 +0.01 x420 Write a Matlab script to: a) Find the solution (x) b) Find the: codon number of the sysicern c) Find the number of unreliable digits in the answer d) Find a value for b such that x3 0 (Hint: b1 decreases from 100, use increments...
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