MYLAB MATH FOR EXCURSIONS IN MATHEMATIC
9th Edition
ISBN: 9780136415893
Author: Tannenbaum
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Textbook Question
Chapter 14, Problem 17E
Exercise17 through 20 refer to the following story: The city of Cleansburg has 8325 registered voters. There is an election for mayor of Cleansburg, and there are three candidates for the position: Smith, Jones, and Brown. The day before the election a telephone poll of 680 randomly chosen registered voters produced the following results: 306 people surveyed indicated that they would vote for Smith, 272 indicated that they would vote for Jones and 102 indicated that they would vote for Brown.
a. Describe the population for this survey.
b. Describe the sample for this survey.
c. Name the sampling method used for this survey.
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Students have asked these similar questions
1) Compute the inverse of the following matrix.
0
1
1
A =
5
1
-1
2-3
-3
Question 3 (5pt): A chemical reaction. In an elementary chemical reaction,
single molecules of two reactants A and B form a molecule of the product C :
ABC. The law of mass action states that the rate of reaction is proportional
to the product of the concentrations of A and B:
d[C]
dt
= k[A][B]
(where k is a constant positive number). Thus, if the initial concentrations are
[A] =
= a moles/L and [B] = b moles/L we write x = [C], then we have
(E):
dx
dt
=
k(ax)(b-x)
1
(a) Write the differential equation (E) with separate variables, i.e. of the form
f(x)dx = g(t)dt.
(b) Assume first that a b. Show that
1
1
1
1
=
(a - x) (b - x)
-
a) a - x
b - x
b)
(c) Find an antiderivative for the function f(x) = (a-x) (b-x) using the previous
question.
(d) Solve the differentiel equation (E), i.e. find x as a function of t. Use the fact
that the initial concentration of C is 0.
(e) Now assume that a = b. Find x(t) assuming that a = b. How does this
expression for x(t) simplify if it is known that [C] =…
2) Consider the matrix
M
=
[1 2 3 4 5
0 2 3 4 5
00345
0 0 0 4 5
0 0 0 0 5
Determine whether the following statements are True or False.
A) M is invertible.
B) If R5 and Mx = x, then x = 0.
C) The last row of M² is [0 0 0 0 25].
D) M can be transformed into the 5 × 5 identity matrix by a sequence of elementary
row operations.
E) det (M) 120
=
Chapter 14 Solutions
MYLAB MATH FOR EXCURSIONS IN MATHEMATIC
Ch. 14 - As part of a sixth-grade class project the teacher...Ch. 14 - As part of a sixth-grade class project the teacher...Ch. 14 - Madison County has a population of 34,522 people....Ch. 14 - Madison County has a population of 34,522 people....Ch. 14 - A big concert was held at the Bowl. Men and women...Ch. 14 - A large jar contains an unknown number of red...Ch. 14 - You want to estimate how many fish there are in a...Ch. 14 - To estimate the population in a rookery, 4965 fur...Ch. 14 - To count whale populations, the capture is done by...Ch. 14 - The critically endangered Mauis dolphin is...
Ch. 14 - Exercises 11 and 12 refer to Chapmans correction....Ch. 14 - Exercises 11 and 12 refer to Chapmans correction....Ch. 14 - Starting in 2004, a study to determine the number...Ch. 14 - Exercises 25 through 28 refer to the following...Ch. 14 - Name the sampling method that best describes each...Ch. 14 - An audit is performed on last years 15, 000...Ch. 14 - Exercise17 through 20 refer to the following...Ch. 14 - Exercise17 through 20 refer to the following...Ch. 14 - Exercise17 through 20 refer to the following...Ch. 14 - Exercise17 through 20 refer to the following...Ch. 14 - Prob. 21ECh. 14 - Prob. 22ECh. 14 - Prob. 23ECh. 14 - Prob. 24ECh. 14 - Exercises 25 through 28 refer to the following...Ch. 14 - Exercises 25 through 28 refer to the following...Ch. 14 - Exercises 25 through 28 refer to the following...Ch. 14 - Exercises 29 and 30 refer to the following story:...Ch. 14 - Exercises 29 and 30 refer to the following story:...Ch. 14 - Prob. 31ECh. 14 - Prob. 32ECh. 14 - Exercises 33 through 36 refer to the following...Ch. 14 - Exercises 33 through 36 refer to the following...Ch. 14 - Exercises 33 through 36 refer to the following...Ch. 14 - Exercises 33 through 36 refer to the following...Ch. 14 - Exercises 37 through 40 refer to a clinical study...Ch. 14 - Exercises 37 through 40 refer to a clinical study...Ch. 14 - Exercises 37 through 40 refer to a clinical study...Ch. 14 - Prob. 40ECh. 14 - Prob. 41ECh. 14 - Exercises 41 through 44 refer to a clinical trial...Ch. 14 - Prob. 43ECh. 14 - Exercises 41 through 44 refer to a clinical trial...Ch. 14 - Prob. 45ECh. 14 - Prob. 46ECh. 14 - Exercises 45 through 48 refer to a study on the...Ch. 14 - Prob. 48ECh. 14 - Exercises 49 through 52 refer to a landmark study...Ch. 14 - Prob. 50ECh. 14 - Exercises 49 through 52 refer to a landmark study...Ch. 14 - Prob. 52ECh. 14 - Exercises 53 through 56 refer to a study conducted...Ch. 14 - Prob. 54ECh. 14 - Exercises53_ through 56_ refer to a study...Ch. 14 - Exercises53 through 56 refer to a study conducted...Ch. 14 - Prob. 57ECh. 14 - Prob. 58ECh. 14 - Exercises 57 through 60 refer to the following...Ch. 14 - Prob. 60ECh. 14 - Prob. 61ECh. 14 - Prob. 62ECh. 14 - Prob. 63ECh. 14 - Prob. 64ECh. 14 - Read the examples of informal surveys given in...Ch. 14 - Leading-question bias. The way the questions in...Ch. 14 - Prob. 67ECh. 14 - Prob. 68ECh. 14 - Prob. 69ECh. 14 - Prob. 70ECh. 14 - Prob. 71ECh. 14 - Prob. 72ECh. 14 - One of the problems with the capture-recapture...Ch. 14 - Darrochs method. is a method for estimating the...
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