misc updates

statistics/lecture/statistics.tex

@@ -214,10 +214,10 @@ category $i$, i.e. of getting a data value in the $i$-th bin.
 \end{exercise}
 
 \begin{exercise}{diehistograms.m}{}
-  Plotte Histogramme von 20, 100, und 1000-mal W\"urfeln.  Benutze
-  \code[hist()]{hist(x)}, erzwinge sechs Bins mit
-  \code[hist()]{hist(x,6)}, oder setze selbst sinnvolle Bins. Normiere
-  anschliessend das Histogram.
+  Plot histograms for 20, 100, and 1000 times rolling a die.  Use
+  \code[hist()]{hist(x)}, enforce six bins with
+  \code[hist()]{hist(x,6)}, or set useful bins yourself. Normalize the
+  histograms appropriately.
 \end{exercise}