PRACT. OF STAT. IN LIFE SCI.W/ACHIEVE 1
4th Edition
ISBN: 9781319424114
Author: Moore
Publisher: MAC HIGHER
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Question
Chapter 6, Problem 6.1AYK
To determine
To identify: whether the study in the problem is observational or experimental.
Expert Solution & Answer
Answer to Problem 6.1AYK
The particular study is observational study.
Explanation of Solution
The study aims to determine percentage of adults whose right cerebral hemisphere is larger than left hemisphere. On a group of people aged 20 and older representing American adult population, brain imaging is done. Afterwards each scan is analyzed to decide which part of brain is larger.
The above study is an observational study and not experimental study.
This is because an observational study measures variable of interest (percentage of adults with larger right hemisphere) but does not influence the results. In an experimental study, a particular treatment is applied to a group of people and compared with control group (group where in no treatment is applied).
Here since brain imaging is done for every member without influencing the response, it is not an experimental study.
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Table of hours of television watched per week:
11
15 24
34
36
22
20
30
12
32
24
36
42
36
42
26
37
39
48
35
26
29
27
81276
40
54
47
KARKE
31
35
42
75
35
46
36
42
65
28
54 65
28
23
28
23669
34
43 35 36
16
19
19
28212
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classes:
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10-19
20-29
|30-39
40-49
50-59
60-69
70-79
80-89
From the frequency table above, find
a) the lower class limits
b) the upper class limits
c) the class width
d) the class boundaries
Statistics 300
Frequency Tables and Pictures of Data, page 2
Using your frequency table, construct a frequency and a relative frequency
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Chapter 6 Solutions
PRACT. OF STAT. IN LIFE SCI.W/ACHIEVE 1
Ch. 6 - Prob. 6.1AYKCh. 6 - Prob. 6.2AYKCh. 6 - Prob. 6.3AYKCh. 6 - Prob. 6.4AYKCh. 6 - Prob. 6.5AYKCh. 6 - Prob. 6.6AYKCh. 6 - Prob. 6.7AYKCh. 6 - Prob. 6.8AYKCh. 6 - Prob. 6.9AYKCh. 6 - Prob. 6.10AYK
Ch. 6 - Prob. 6.11AYKCh. 6 - Prob. 6.12AYKCh. 6 - Prob. 6.13AYKCh. 6 - Prob. 6.14AYKCh. 6 - Prob. 6.15CYSCh. 6 - Prob. 6.16CYSCh. 6 - Prob. 6.17CYSCh. 6 - Prob. 6.18CYSCh. 6 - Prob. 6.19CYSCh. 6 - Prob. 6.20CYSCh. 6 - Prob. 6.21CYSCh. 6 - Prob. 6.22CYSCh. 6 - Prob. 6.23CYSCh. 6 - Prob. 6.24CYSCh. 6 - Prob. 6.25ECh. 6 - Prob. 6.26ECh. 6 - Prob. 6.27ECh. 6 - Prob. 6.28ECh. 6 - Prob. 6.29ECh. 6 - Prob. 6.30ECh. 6 - Prob. 6.31ECh. 6 - Prob. 6.32ECh. 6 - Prob. 6.33ECh. 6 - Prob. 6.34ECh. 6 - Prob. 6.35ECh. 6 - Prob. 6.36ECh. 6 - Prob. 6.37ECh. 6 - Prob. 6.38ECh. 6 - Prob. 6.39ECh. 6 - Prob. 6.40ECh. 6 - Prob. 6.41ECh. 6 - Prob. 6.42ECh. 6 - Prob. 6.43E
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