EBK MATHEMATICS FOR MACHINE TECHNOLOGY
7th Edition
ISBN: 9780100548169
Author: SMITH
Publisher: YUZU
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Chapter 32, Problem 35A
To determine
Find the readings in the table from the help of given data.
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Q5. Manager of car dealership is trying to see how number of sale associates can affect number of final sales
in his dealership. He collects the following information:
Number of cars
Number of working
sale associates per day
sold in one day
2
2
3
5
3
3
4
1
3
1
2
4
5
Calculate the correlation coefficient for this data set using the equation given on slide#77? Comment on the
association of the two variables.
ΣΥ) - Σ) × Σ(Υ)
(X)
E(Y)
N
2
(Σ(x²) - 2x²) × (Σ(12) - ²)
N
N
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
Chapter 32 Solutions
EBK MATHEMATICS FOR MACHINE TECHNOLOGY
Ch. 32 - Use an electronic vernier caliper to measure the...Ch. 32 - Read the metric vernier depth gage measurement for...Ch. 32 - Prob. 3ACh. 32 - Prob. 4ACh. 32 - Prob. 5ACh. 32 - Prob. 6ACh. 32 - Prob. 7ACh. 32 - Read the settings on the following 0.001-inch...Ch. 32 - Prob. 9ACh. 32 - Prob. 10A
Ch. 32 - Prob. 11ACh. 32 - Prob. 12ACh. 32 - Prob. 13ACh. 32 - Prob. 14ACh. 32 - Prob. 15ACh. 32 - Prob. 16ACh. 32 - Prob. 17ACh. 32 - Prob. 18ACh. 32 - Prob. 19ACh. 32 - Prob. 20ACh. 32 - Prob. 21ACh. 32 - Prob. 22ACh. 32 - Prob. 23ACh. 32 - Prob. 24ACh. 32 - Prob. 25ACh. 32 - Prob. 26ACh. 32 - Prob. 27ACh. 32 - Prob. 28ACh. 32 - Prob. 29ACh. 32 - Prob. 30ACh. 32 - Prob. 31ACh. 32 - Prob. 32ACh. 32 - Prob. 33ACh. 32 - Prob. 34ACh. 32 - Prob. 35ACh. 32 - Prob. 36ACh. 32 - Prob. 37ACh. 32 - Prob. 38ACh. 32 - Prob. 39ACh. 32 - Prob. 40ACh. 32 - Prob. 41ACh. 32 - Prob. 42ACh. 32 - Prob. 43ACh. 32 - Prob. 44ACh. 32 - Prob. 45ACh. 32 - Prob. 46ACh. 32 - Prob. 47ACh. 32 - Prob. 48ACh. 32 - Prob. 49ACh. 32 - Read the settings on the following 0.0001-inch...Ch. 32 - Prob. 51ACh. 32 - Prob. 52ACh. 32 - Prob. 53ACh. 32 - Prob. 54ACh. 32 - Prob. 55ACh. 32 - Prob. 56ACh. 32 - Prob. 57ACh. 32 - Prob. 58ACh. 32 - Given the following barrel scale, thimble scale,...Ch. 32 - Prob. 60ACh. 32 - Prob. 61ACh. 32 - Prob. 62ACh. 32 - Prob. 63ACh. 32 - Prob. 64ACh. 32 - Prob. 65ACh. 32 - Prob. 66ACh. 32 - Prob. 67ACh. 32 - Prob. 68ACh. 32 - Prob. 69ACh. 32 - Prob. 70A
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