I need you help so bad...

I dont know how I do this:

Create 100 standardized (ie subtract μ_X ̅ and divide by σ_X ̅) sample values, each based on 2 observations of exponentially distributed random variables with population averaging 2, and make histograms for the 100 standard sample values. Repeat procedure for sample sizes 5,10, 20 and 40. (Tip: Make an Excel sheet for each sample size, one with 100 sample values based on sample size 2, one with 100 sample values based on sample size 5, etc ...) Histograms should be included in the report and it should be clear which sample sizes used for the sample values on which the histograms are based.

* (You should also specify which formula you use in Excel to generate the observations of the exponentially)