Concept explainers
To find out the sample that the student obtained.
Explanation of Solution
It is a convenience sample because the student surveyed the first 100 students to arrive at school on a particular morning. In a convenience sample choosing individuals who are easiest to reach results can be shown.
b.
To explain why the sampling method is biased.
b.
Explanation of Solution
The Convenience samples are sure to be biased because the first 100 students to arrive at school are representative of the student population in general. 7.2 hours is probably higher. Students who received less sleep the night before are probably more likely to run late the next morning.
Chapter 4 Solutions
The Practice of Statistics for AP - 4th Edition
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