Asked by Anonymous
A simple random sample of kitchen toasters is to be taken to determine the mean operational lifetime in hours. Assume that the lifetimes are normally distributed with population standard deviation 21 hours. Find the sample size needed so that a 98% confidence interval for the mean lifetime will have a margin of error of 4.
Answers
Answered by
J_Yeary
wtf
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.