The data set mifem is part of the larger data set in the data frame monica that we have included in our DAAG package. Use tree-based regression to predict mortality in this larger data set. What is...

The data set mifem is part of the larger data set in the data frame monica that we have included in our DAAG package. Use tree-based regression to predict mortality in this larger data set. What is the most immediately striking feature of the analysis output? Should this be a surprise?