I need help on this small statistical test exercise

#1
You have a sample of 6 monthly returns for a mutual fund:
Month Return
1 −3%
2 5%
3 5%
4 6%
5 0%
6 4%

The population standard deviation of returns is 3.2361%, their sample standard deviation is 3.5449%. Use an appropriate statistical test to test whether their average is greater than zero.
 

hlsmith

Not a robit
#2
What don't you understand? What have you covered in class? They have also provided data, which can be used for calculating the mean and also the sample size.