Asked by Sonia Nelson on Aug 01, 2024
Verified
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.
Statistic
A numerical measurement describing some characteristic of a sample, used to estimate the population parameter.
Sample
A smaller group chosen from the larger population for the purpose of gathering statistical data through measurements, observations, or inquiries.
- Differentiate the characteristics of statistics from those of parameters.
Verified Answer
VP
Veronica PradoAug 04, 2024
Final Answer :
B
Explanation :
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.
Learning Objectives
- Differentiate the characteristics of statistics from those of parameters.