Mathematics For Machine Technology
8th Edition
ISBN: 9781337798310
Author: Peterson, John.
Publisher: Cengage Learning,
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Chapter 51, Problem 26A
To determine
The values of the settings on the Vernier protractor scales.
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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
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10
20
30
40
40
50
60
00
10
70
B
80
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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
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24 30
36
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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 51 Solutions
Mathematics For Machine Technology
Ch. 51 - Express 159.3596 as degrees, minutes, and seconds....Ch. 51 - Prob. 2ACh. 51 - Prob. 3ACh. 51 - Prob. 4ACh. 51 - Prob. 5ACh. 51 - Prob. 6ACh. 51 - Prob. 7ACh. 51 - Write the values of angles F-J on the preceding...Ch. 51 - Prob. 9ACh. 51 - a. 98 b. 97 c. 123 d. 150 e. 166
Ch. 51 - Prob. 11ACh. 51 - Lay out a four-sided figure (quadrilateral) of any...Ch. 51 - Prob. 13ACh. 51 - In Exercises 13 through 16, measure each of the...Ch. 51 - Prob. 15ACh. 51 - In Exercises 13 through 16, measure each of the...Ch. 51 - Prob. 17ACh. 51 - In Exercises 13 through 16, measure each of the...Ch. 51 - Prob. 19ACh. 51 - Write the values of the settings on the following...Ch. 51 - Prob. 21ACh. 51 - Write the values of the settings on the following...Ch. 51 - Write the values of the settings on the following...Ch. 51 - Write the values of the settings on the following...Ch. 51 - Write the values of the settings on the following...Ch. 51 - Prob. 26ACh. 51 - Write the values of the settings on the following...Ch. 51 - Write the complements of the angles in Exercises...Ch. 51 - Prob. 29ACh. 51 - Prob. 30ACh. 51 - Prob. 31A
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