Asked by Alexia Montcerisier on May 22, 2024
Verified
If the population standard deviation of the lifetime of washing machines is estimated to be 1000 hours, how large a sample must be taken in order to be 95% confident that the margin of error will not exceed 100 hours?
Margin of Error
An indicator of the precision of an estimate in statistics, showing the range within which the true value is expected to lie with a certain level of confidence.
- Acquire knowledge on the interrelation of sample size, confidence level, and margin of error.
Verified Answer
AB
Learning Objectives
- Acquire knowledge on the interrelation of sample size, confidence level, and margin of error.