A company has developed a new power cell and wants to estimate its average lifetime.A random sample of 650 power cells is tested and the average lifetime of this sample is found to be 315 hours.The 315 hours is the value of a:
A)parameter.
B)statistic.
C)sample.
D)population.

Question

Quizplus · Accepted Answer

The 315 hours represents the average lifetime of the sample of 650 power cells that were tested. Therefore, it is a statistic, which is a numerical summary of a sample. A parameter, on the other hand, is a numerical summary of an entire population.

A Company Has Developed a New Power Cell and Wants