a
Whether the statement is a parameter or a statistic.
a
Answer to Problem 7E
The statement is a statistic.
Explanation of Solution
Given information:
Of the first 100, percentage of unlisted number
Of all Los Angeles residential, percentage of unlisted numbers
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 unlisted number of the first 100 is a descriptive measure for a sample. This means that it is a statistic but it is not a parameter.
Also, the sample proportion is,
Hence, the statement is a statistic.
b
The appropriate notation to describe each number.
b
Answer to Problem 7E
The notation of the population proportion 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, percentage of registered number for all Los Angeles residential is a descriptive measure for parameter.
Also, the sample proportion is,
Hence, the notation of the population proportion is
Chapter 7 Solutions
The Practice of Statistics for AP - 4th Edition
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