EBK CONTEMPORARY MATHEMATICS FOR BUSINE
8th Edition
ISBN: 9781305888715
Author: Brechner
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Chapter 21.III, Problem 3RE
(a)
To determine
To calculate: The frequency distribution with the use of six classes of equal size
(b)
To determine
To calculate: The mean of the survey of the lunch-hour sales receipts with for frequency distribution with the use of six classes of equal size
(c)
To determine
To graph: A histogram for the Internet cafe from the frequency distribution data.
| Class ($) | Tally | Frequency (f) |
| IIII | ||
| II |
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Statistics
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1) a) Find a matrix P such that PT AP orthogonally diagonalizes the following matrix
A.
= [{² 1]
A =
b) Verify that PT AP gives the correct diagonal form.
2
01
-2
3
2) Given the following matrices A =
-1
0
1] an
and B =
0
1
-3
2
find the following matrices:
a) (AB) b) (BA)T
3) Find the inverse of the following matrix A using Gauss-Jordan elimination or
adjoint of the matrix and check the correctness of your answer (Hint: AA¯¹ = I).
[1 1 1
A = 3 5 4
L3 6 5
4) Solve the following system of linear equations using any one of Cramer's Rule,
Gaussian Elimination, Gauss-Jordan Elimination or Inverse Matrix methods and
check the correctness of your answer.
4x-y-z=1
2x + 2y + 3z = 10
5x-2y-2z = -1
5) a) Describe the zero vector and the additive inverse of a vector in the vector
space, M3,3.
b) Determine if the following set S is a subspace of M3,3 with the standard
operations. Show all appropriate supporting work.
Find the Laplace Transform of the function to express it in frequency domain form.
Chapter 21 Solutions
EBK CONTEMPORARY MATHEMATICS FOR BUSINE
Ch. 21.I - Use Table 21-1 to answer the following questions...Ch. 21.I - Use Exhibits 21-1 and 21-2 to answer the following...Ch. 21.I - Prob. 3TIECh. 21.I - Prob. 4TIECh. 21.I - Prob. 5TIECh. 21.I - Prob. 6TIECh. 21.I - Prob. 7TIECh. 21.I - Prob. 8TIECh. 21.I - Prob. 9TIECh. 21.I - Prob. 10TIE
Ch. 21.I - Prob. 1RECh. 21.I - TABLE 21-1 Magnum Enterprises Six-Month Sales...Ch. 21.I - Prob. 3RECh. 21.I - Prob. 4RECh. 21.I - TABLE 21-1 Magnum Enterprises Six-Month Sales...Ch. 21.I - Prob. 6RECh. 21.I - Prob. 7RECh. 21.I - BUSINESS DECISION: CHOOSING A CHART
8. You have...Ch. 21.II - Prob. 11TIECh. 21.II - Prob. 12TIECh. 21.II - Prob. 13TIECh. 21.II - Prob. 14TIECh. 21.II - Prob. 15TIECh. 21.II - Prob. 1RECh. 21.II - Prob. 2RECh. 21.II - Prob. 3RECh. 21.II - Prob. 4RECh. 21.II - Prob. 5RECh. 21.II - Prob. 6RECh. 21.II - Prob. 7RECh. 21.II - Prob. 8RECh. 21.II - Prob. 9RECh. 21.II - Prob. 10RECh. 21.II - Determine the mode of the following sets of...Ch. 21.II - Prob. 12RECh. 21.II - Prob. 13RECh. 21.II - Prob. 14RECh. 21.II - Prob. 15RECh. 21.II - Prob. 16RECh. 21.II - Prob. 17RECh. 21.II - The following numbers represent the gallons of...Ch. 21.II - You are the owner of The Dependable Delivery...Ch. 21.II - Prob. 20RECh. 21.III - Prob. 17TIECh. 21.III - Prob. 18TIECh. 21.III - Prob. 1RECh. 21.III - You are the sales manager of the Esquire...Ch. 21.III - Prob. 3RECh. 21.III - BUSINESS DECISION: RELATIVE FREQUENCY...Ch. 21 - 1. The systematic process of collecting,...Ch. 21 - 2. Statistical procedures that deal with the...Ch. 21 - A collection of related data arranged for ease of...Ch. 21 - Prob. 4CRCh. 21 - 5. The horizontal axis of a line chart is known as...Ch. 21 - Prob. 6CRCh. 21 - To construct a pie chart, we multiply each...Ch. 21 - Prob. 8CRCh. 21 - 9. The _______ is the midpoint value of a set of...Ch. 21 - Prob. 10CRCh. 21 - Prob. 11CRCh. 21 - Prob. 12CRCh. 21 - Prob. 13CRCh. 21 - Prob. 14CRCh. 21 - 1. The following data represent the monthly sales...Ch. 21 - Prob. 2ATCh. 21 - Prob. 3ATCh. 21 - You have just been hired as the quality control...Ch. 21 - 5. You are the human resource director for Apollo...
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