AnswersCA-Statistics and Probability BUnit Test — Unit testQuestion 1
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QuizMultiple Choice

Unit Test — Unit test

Question 1 • CA-Statistics and Probability B

The governor of Florida would like to estimate the mean age of all Florida residents. To do so, he randomly selects 500 Florida residents and determines their mean age to be 58.2 years. However, according the most recent census data, the mean age of all Florida residents is 55.6 years. Which of the following properly describes the number 58.2?

Answer
A
sample
B
statistic
C
population
D
parameter

Explanation

The 500 randomly selected residents are a sample, and their mean age of 58.2 years is a numerical summary calculated from that sample. A value that summarizes a sample is called a statistic. The mean age of 55.6 years describes all Florida residents, so it is a parameter.

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