Asked by shani
A survery of 80 randomly selected companies asked them to report the annual income of their presidents. Assuming that incomes are normally distributed with a standrad deviation of #30,000, determine the 90% confidence interval estimate of the mean annual income of all company presidents.
Answers
Answered by
PsyDAG
90% confidence interval = mean ± 1.645 SEm
SEm (Standard Error of the mean) = SD/√(n-1)
SEm (Standard Error of the mean) = SD/√(n-1)
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.