jessiephil
New member
- Joined
- Mar 30, 2015
- Messages
- 1
I can't seem to figure how to figure out this problem...
An economist wants to estimate the mean annual income from the first year of work for college graduates in arts and sciences. How many incomes must be found if the economist wants to be 95% confident that the sample mean is within $750.00 of the true population mean? Assume that a previous study has calculated a standard deviation of these income is $6250
Thank!!!
An economist wants to estimate the mean annual income from the first year of work for college graduates in arts and sciences. How many incomes must be found if the economist wants to be 95% confident that the sample mean is within $750.00 of the true population mean? Assume that a previous study has calculated a standard deviation of these income is $6250
Thank!!!