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 characteristic of a sample, so the average lifetime of 1500 hours, derived from a sample of 30 AAA batteries, is a statistic.

A Manufacturer of Batteries Routinely Tests Its Products to Determine