Question 1123718
Q: Suppose you would like to estimate the mean teacher's salary in Khomas region, with 99% confidence, to an accuracy within $2000. You are told that the population standard deviation of teachers' salaries in Khomas is known to be $6000. Find the necessary sample size you will need for this study.

Answer: The required sample size is at least {{{highlight(60)}}}. 
 *[illustration 1123718].