Over the past five years, your investment provided the following percentage returns:

Year	Annual Return
2016	4.589%
2017	5.315%
2018	-5.140%
2019	-2.295
2020	14.590%

Calculate the following statistics: (1/1000 of one percent without % sign, e.g. 12.671, if a negative percentage, -9.56):

1) Arithmetic mean for annual returns

2) Standard deviation (sample):

Assume that the frequency distribution of annual returns followed a normal distribution.

What is the range that you would expect the annual returns to fall within 95% of the time?

3) Lower limit of annual return

4) Upper limit of annual return