Introduction to Statistics and Data Analysis
5th Edition
ISBN: 9781305115347
Author: Roxy Peck; Chris Olsen; Jay L. Devore
Publisher: Brooks Cole
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Chapter 16.2, Problem 11E
To determine
Test whether the data provide convincing evidence that the
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The carbon monoxide (CO) level in a manufacturing plant is supposed to be about 50 parts per million (ppm). However the actual CO levels are quite variable. Ten CO measurements are taken at various times during the day: Test if the average carbon monoxide (CO) level is not 5 0 ppm at the manufacturing plant if the population standard is 8.07. Use 10% level of significance.
A large manufacturing company producing air conditioner compressor believes the number
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3.
Day
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(Fahrenheit)
63
(in thousands)
1.52
1
2
70
1.68
3
73
1.8
4
75
2.05
80
2.36
6.
82
2.25
7
85
2.68
8
88
2.9
9.
90
3.14
3.06
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10
91
11
92
12
75
1.92
13
98
3.4
14
100
3.28
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а)
b)
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Exposure to microbial products, especially endotoxin, may have an impact on vulnerability to allergic diseases. The following are data on concentration (EU/mg) in settled dust for one sample of urban homes and another of farm homes.
U: 6.0 5.0 11.0 33.0 4.0 5.0 80.0 18.0 35.0 17.0 23.0
F: 6.0 13.0 13.0 8.0 9.0 6.0
2.0 17.0
6.0 8.2 21.0 9.7 3.0 2.0 0.5
n USE SALT
(a) Determine the sample mean for each sample. (Round your answers to four decimal places.)
urban homes
EU/mg
farm homes
EU/mg
How do they compare?
O The average endotoxin concentration in urban homes is more than double the average concentration in farm homes.
O The average endotoxin concentration in farm homes is more than double the average concentration in urban homes.
O The average endotoxin concentration is about the same in both urban and farm homes.
(b) Determine the sample median for each sample.
urban homes
EU/mg
farm homes
EU/mg
How do they compare?
O The median endotoxin concentration is about the same in both urban…
Chapter 16 Solutions
Introduction to Statistics and Data Analysis
Ch. 16.1 - Urinary fluoride concentration (in parts per...Ch. 16.1 - Prob. 2ECh. 16.1 - Prob. 3ECh. 16.1 - A blood lead level of 70 mg/ml has been commonly...Ch. 16.1 - The effectiveness of antidepressants in treating...Ch. 16.1 - Prob. 6ECh. 16.1 - Prob. 7ECh. 16.2 - The effect of a restricted diet in the treatment...Ch. 16.2 - Peak force (N) on the hand was measured just prior...Ch. 16.2 - In an experiment to study the way in which...
Ch. 16.2 - Prob. 11ECh. 16.2 - Prob. 12ECh. 16.2 - Prob. 13ECh. 16.2 - Prob. 14ECh. 16.2 - Prob. 15ECh. 16.2 - Prob. 16ECh. 16.2 - Prob. 17ECh. 16.2 - The signed-rank test can be adapted for use in...Ch. 16.3 - Prob. 19ECh. 16.3 - Prob. 20ECh. 16.3 - The given data on phosphorus concentration in...Ch. 16.3 - Prob. 22ECh. 16.3 - Prob. 23ECh. 16.3 - The following data on amount of food consumed (g)...Ch. 16.3 - The article Effect of Storage Temperature on the...
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