Concept explainers
a.
Whether the statement is a parameter or a statistic.
a.
Answer to Problem 8E
The statement is a statistic.
Explanation of Solution
Given information:
Mean height of all the adult American women
Mean height of a random sample of female college students
Know that a descriptive measure for a population is known as a parameter. Also, a descriptive measure for a sample is known as a statistic.
Here, the mean height of a random sample of female college students is a descriptive measure for a sample. This means that it is a statistic but it is not a parameter.
Also, the sample mean is,
Hence, the statement is a statistic.
b.
The appropriate notation to describe each number.
b.
Answer to Problem 8E
The notation of the sample mean is
Explanation of Solution
Know that a descriptive measure for a population is known as a parameter. Also, a descriptive measure for a sample is known as a statistic.
Here, the mean height of all the adult American women is a descriptive measure for parameter.
Also, the sample mean is,
Hence, the notation of the sample mean is
Chapter 7 Solutions
The Practice of Statistics for AP - 4th Edition
Additional Math Textbook Solutions
Statistics: The Art and Science of Learning from Data (4th Edition)
Elementary Statistics Using Excel (6th Edition)
Intro Stats, Books a la Carte Edition (5th Edition)
Elementary Statistics (13th Edition)
Introductory Statistics
Essentials of Statistics (6th Edition)
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