Mathematics For Machine Technology
8th Edition
ISBN: 9781337798310
Author: Peterson, John.
Publisher: Cengage Learning,
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Chapter 35, Problem 4A
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Measure the length for given line segment.
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Q3. The distribution for the working lifetime of light bulbs, manufactured in a company, is found to be
normally distributed with a mean of 1450 hours and a standard deviation of 60 hours.
a) In this distribution, find the life time of a lightbulb whose z-score is -1.8?
b) Which percentage of lightbulbs have life time less than 1400 hours?
c) Which percentage of lightbulbs have life time greater than 1500 hours?
d) Which percentage of lightbulbs have life time between 1420 to 1500 hours?
Q4. Considering the following two normal distributions A and B, which statement (or statements) is correct?
a) Mode of the distribution A is larger than that of distribution B.
b) SD of the distribution B is larger than that of distribution A.
c) Mean of the distribution A is smaller than that of distribution B.
d) A data item with z-score of -1 falls between 20 to 30 in distribution A.
e) A data item with z-score of +1 falls between 10 to 20 in distribution B.
A
0
10
20
30
40
40
50
60
00
10
70
B
80
90
100
Q1. A traffic camera recorded number of red cars going through the intersection at 16th Ave N and Centre St.
each day over 7 days was:
32
30
24 30
36
38
27
a) Calculate the mean, mode, range and median of the data set above.
c) Calculate the standard deviation of this data set.
S
Chapter 35 Solutions
Mathematics For Machine Technology
Ch. 35 - Prob. 1ACh. 35 - Prob. 2ACh. 35 - Prob. 3ACh. 35 - Prob. 4ACh. 35 - Prob. 5ACh. 35 - Express 235% as a decimal fraction or mixed...Ch. 35 - Prob. 7ACh. 35 - Prob. 8ACh. 35 - Prob. 9ACh. 35 - Prob. 10A
Ch. 35 - Prob. 11ACh. 35 - Prob. 12ACh. 35 - Prob. 13ACh. 35 - Prob. 14ACh. 35 - Prob. 15ACh. 35 - Prob. 16ACh. 35 - Prob. 17ACh. 35 - Prob. 18ACh. 35 - Read the settings of these metric vernier...Ch. 35 - Read the settings of these metric vernier...Ch. 35 - Prob. 21ACh. 35 - Read the settings of these metric vernier...Ch. 35 - Prob. 23ACh. 35 - Prob. 24ACh. 35 - Prob. 25ACh. 35 - Prob. 26ACh. 35 - Prob. 27ACh. 35 - Read the settings of these metric vernier...Ch. 35 - Prob. 29ACh. 35 - Read the settings of these metric vernier...
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- Q2. Government of Canada is designing Registered Retirement Saving Plans (RRSP) for Canadians. According to statistics Canada, the life expectancy in Canada is 86 years with standard deviation of 4.8 years. a) Find the z-score of a person who is 90 years old? b) Find the age of a person whose z-score is -1.4? c) What percent of people age higher than 80? d) What percent of people age less than 83? e) What percent of people age between 85 and 88?arrow_forwardb pleasearrow_forward(b) Let I[y] be a functional of y(x) defined by [[y] = √(x²y' + 2xyy' + 2xy + y²) dr, subject to boundary conditions y(0) = 0, y(1) = 1. State the Euler-Lagrange equation for finding extreme values of I [y] for this prob- lem. Explain why the function y(x) = x is an extremal, and for this function, show that I = 2. Without doing further calculations, give the values of I for the functions y(x) = x² and y(x) = x³.arrow_forward
- Definition: A topology on a set X is a collection T of subsets of X having the following properties. (1) Both the empty set and X itself are elements of T. (2) The union of an arbitrary collection of elements of T is an element of T. (3) The intersection of a finite number of elements of T is an element of T. A set X with a specified topology T is called a topological space. The subsets of X that are members of are called the open sets of the topological space.arrow_forward2) Prove that for all integers n > 1. dn 1 (2n)! 1 = dxn 1 - Ꮖ 4 n! (1-x)+/arrow_forwardDefinition: A topology on a set X is a collection T of subsets of X having the following properties. (1) Both the empty set and X itself are elements of T. (2) The union of an arbitrary collection of elements of T is an element of T. (3) The intersection of a finite number of elements of T is an element of T. A set X with a specified topology T is called a topological space. The subsets of X that are members of are called the open sets of the topological space.arrow_forward
- Definition: A topology on a set X is a collection T of subsets of X having the following properties. (1) Both the empty set and X itself are elements of T. (2) The union of an arbitrary collection of elements of T is an element of T. (3) The intersection of a finite number of elements of T is an element of T. A set X with a specified topology T is called a topological space. The subsets of X that are members of are called the open sets of the topological space.arrow_forward3) Let a1, a2, and a3 be arbitrary real numbers, and define an = 3an 13an-2 + An−3 for all integers n ≥ 4. Prove that an = 1 - - - - - 1 - - (n − 1)(n − 2)a3 − (n − 1)(n − 3)a2 + = (n − 2)(n − 3)aı for all integers n > 1.arrow_forwardDefinition: A topology on a set X is a collection T of subsets of X having the following properties. (1) Both the empty set and X itself are elements of T. (2) The union of an arbitrary collection of elements of T is an element of T. (3) The intersection of a finite number of elements of T is an element of T. A set X with a specified topology T is called a topological space. The subsets of X that are members of are called the open sets of the topological space.arrow_forward
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