Adam Gladstone does a bit of inference testing:
In the previous posts in this series (Using R in Excel) I have demonstrated some basic use-cases where using R in Excel is useful. Specifically we have looked at descriptive statistics, linear regression, forecasting, and calling Python. In this post, I am going to look at inferential statistics and how R can be used (in Excel) to perform some typical statistical tests. Excel provides many excellent facilities for data wrangling and analysis. However, for certain types of statistical data analysis the limitations of the built-in functions and the Analysis ToolPak is not sufficient, and R provides superior facilities.
Read on for a few examples of tests, though there are a huge number available in R itself as well as its ecosystem of packages.