A manufacturer of batteries routinely tests its products to determine lifetime
(hours of continuous usage). Suppose they select a sample of 30 AAA batteries and find
That the average lifetime is 1500 hours. This is a
A) parameter.
B) statistic.
C) sampling frame.
D) sample.
E) population.

Question

Quizplus · Accepted Answer

A statistic is a numerical value that represents a characteristic of a sample, such as the average lifetime of the 30 AAA batteries in this case.

A Manufacturer of Batteries Routinely Tests Its Products to Determine