A chi-square test for independence has df=2 , then how many cells are in the matrix of observed frequencies? Please show work 4 5 6 8

Q: a. Give the order of matrix.b. If A = [aij], identify a32 and a23, or explain why identification is…

A: We have to find: a. order of matrix b. a32 and a23 when A=ai j And matrix is given as A=4-75-68-1…

Q: spañol -:and - -3 0 4 Let c= 0 - 1 Find each matrix below. If a matrix is rat defined, click on…

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Q: Find the LU-factorization of the matrix. (Your L matrix must be unit diagonal.) 4 0 1 12 1 1 -4 1 0…

A: LU decomposition

Q: 6 1 is similar to the matrix B = 3 4 7 0 The matrix A = Select one: True False

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Q: You have a data matrix X € Rnxd where each row corresponds to a student and each column corresponds…

A: The main objective is to give upper bound for the rank of matrix X.

Q: Diagonalize the matrix 1 0 -1] A = -2 3 -1 -2 0 2 In other words, you need to find a diagonal matrix…

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Q: (b) Let A be an n × n matrix. Show that for any positive integer t we have t-1 (I – A) A* = I – A°…

A: As you asked for only question number 2 I solved it for you.

Q: 2: Let PE R be an n xn matrix satisfying the equation P = P. What are the possible values of det(P)?…

A: If a matrix A  is satisfying a polynomial f(A), Then eigen value of A will satisfy the polynomial…

Q: The matrix A =1 −1 1 −1 has the property that A2 = O. Is it possible for a nonzero symmetric 2 × 2…

A: Given, The matrix                  has the property that A2 = 0.

Q: 1. Given the linear combination below, try to create a corresponding matrix representing it. Use…

A: The representation of the above equation in matrix form is in the image below.

Q: §3.7, Exercise 10. For which values of a, b, c is the matrix -() 1 а A = 1 1 invertible? Find A-1…

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Q: 1 2 0 9 6. 18 1 -1 -5 -13 0 1 -3 4 1. 2.

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Q: Find the size of the matrix. Determine if it is 9 6 3 1 39 6 1 9

A: Count the number of rows and columns

Q: Find an LU factorization of the matrix A (with L unit lower triangular). 4. -8 8 -4 A = 16 - 29 28 -…

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Q: c. Consider the multiplication AB is existing with the size (M x N), where B is a matrix of size (L…

A: Solving Part C only ..as you have already mentioned :-

Q: Find the row reduced echelon  matrix R and invertible matrix P such : R = PA             -1     1…

A: The given matrix is: A=-11-10-34114-6-4-2310-14. To find row reduced echelon form of given matrix,…

Q: (b) The rank of the matrix A is 2. (2 4 2 A =1 k 3 1 2 2/ (1) (ii) For this value of k, is A…

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Q: You have a data matrix X = Rnxd where each row corresponds to a student and each column corresponds…

A: As per the question we are given a (n×d) data matrix X consisting of the marks of students 8n…

Q: Given the matrix 6 8 A Tind all values of althat make the NA0 Give your answers in increasing order.…

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Q: Diagonalize the matrix 1 -1 A = -2 3 -1 -2 In other words, you need to find a diagonal matrix D and…

A: Here we find diagonal matrix D and invertible matrix P

Q: Let A be a 3 x 2 matrix with lineary Independent columns. Suppose we know that Al-5. Find a solution…

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Q: 6. () Is the following statement True or False? When a coefficient matrix is in reduced echelon…

A: Given statement is : When a co-efficient matrix is in reduced echelon form, the only members in the…

Q: (2) Suppose B is a 3x3 matrix and that a) Can you tell if B is invertible? Explain ) Can tell if B…

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Q: The test for independence is used when two categorical variables are collected. We put the observed…

A: Given : 2 categorical variables Test for independence is used when 2 categorical variables are…

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A: Given matrix, A=01412-1580 To find: a) Reduced Matrix  using row elimination transformation…

Q: Gauss Elimination method employs both sides of equation to be multiplied by a non-zero constant. The…

A: Gauss Elimination method employs both sides of equation to be multiplied by a non-zero constant. The…

Q: Hi, what is the fastest way to find the cofactor matrix for a 3x3 matrix? The calculator allowed is…

A: Let us suppose that the given matrix is A:

Q: ior A. You can resize a matrix (when appropriate) by clicking and dragging the bottom-right corner…

A: Given that:1-12-12-32-14-1+5A=2960-4-144-10To find A

Q: Diagonalize the matrix 1 0 -1 A = -2 3 -1 -2 0 2 In other words, you need to find a diagonal matrix…

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Q: Given a square matrix A, elementary row operations (or column operations) performed on A affect the…

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Q: What is reduced echelon form for a matrix ? does it always have to be 1 in the pivots? can it it be…

A: A rectangular matrix is said to be in row-echelon form if it satisfies the following three…

Q: What 3 by 3 matrix E multiplies (x, y, z) to give (x, y, z + x )? What matrix E- 1 multiplies…

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Q: Diagonalize the matrix 1 -1 A = -2 3 -1 -2 In other words, you need to find a diagonal matrix D and…

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Q: [2 3 2] 10.) Is A=|0 7 6 an invertible matrix? Explain [5 5 4]

A: We have to solve the problem

Q: Find an LU factorization of the matrixA (with L unit lower triangular). 2 4 -2 -2 -2 -6 5 3 A= 4 0…

A: We have to solve given problem: Concept:

Q: A chi-square test for independence has df = 3. What is the total number of categories (cells in the…

A: Given:  In the given scenario, the test mentioned is a chi-square test for independence. The degrees…

Q: Find an example of a 2 x 2 matrix A such that A? + I2, A3 + I2, and A6 = I2. Explain how you know,…

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Q: Find the LU-factorization of the matrix. (Your L matrix must be unit diagonal.) 1 0 LU%=D

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Q: This is a linear algebra problem. Please explain each step thoroughly. if A is an 8 x 5 matrix,…

A: Given that A is an 8×5 matrix. To find the smallest possible value of dimension of Null A.

Q: Find an LU factorization of the matrix A (with Lunit lower triangular). ol -4 2 A = 8-14 7 -1 4 3 11…

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Q: Find the value of k that makes the matrix singular.   4k + 1 3   −9 1 k =

A: Given query is to find the value of k.

Q: Q2: You have the matrix How can we get the transpose matrix

A: Given problem:-

Q: ​A chi-square test for independence produces a chi-square statistic with df = 2. The data for this…

A: There are two categorical variables. The number of rows = 2. The number of columns = 2. We have to…

Q: 3. Find LU factorization of the matrix A and show that A = LU. 3 1 3 6 4 8 -10 3 2 5 -4 A = -1 -9 5…

A: method. A= LU L= lower triangular matrix  U= upper triangular matrix  first find the first row of U…

Q: Q3 Let A be n × n matrix that has zeros on the main diagonal and ones everywhere else. Example of a…

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Q: t possible rank of A ? .. If A is a 6*7 Matrix. What is the largest possible rank of A? Explain

A: The rank A is the number of pivot positions and in both cases it cannot be exceed 6.

Q: 3. let A be a 3x3 matrix and Auppose that A + 2a,- 30z=0, where a,, a,and az are the Colums of the…

A: System of Linear equations and non singularity

Q: ents is INCORRECT? che same solution set, then they the coefficient matrix of a linea mber of…

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Q: Find an LU factorization of the matrix A (with L unit lower triangular). 2 4 - 1 1 4 2 4 A = 4 10 8…

A: We have to write the U matrix using LU decomposition method.