Merge pull request #1334 from dlglin/FixPercentInRadioButtons

Fix two issues in Statistics problem

Author: gajennings

OpenProblemLibrary/CollegeOfIdaho/setStatistics_Ch01PicturingDistributionsWithGraphs/01Stats_08_PictDistnsWGraphs/01Stats_08_PictDistnsWGraphs.pg

@@ -68,7 +68,14 @@ $rb2 = RadioButtons(
     [ 'symmetric', 'skewed right', 'skewed left', 'none of the above' ], 1);
 
 $rb3 = RadioButtons(
-    [ 'above 30%', 'between 20% and 30%', 'about 10%', 'less than 3%' ], 2);
+    [
+        "above 30$PERCENT",
+        "between 20$PERCENT and 30$PERCENT",
+        "about 10$PERCENT",
+        "less than 3$PERCENT"
+    ],
+    2
+);
 
 $showPartialCorrectAnswers = 0;
 
@@ -86,7 +93,7 @@ b) The histogram is
 
     [_]{$rb2}
 
-c) The percentage of students with over $20 in their possession is
+c) The percentage of students with over $30 in their possession is
 
     [_]{$rb3}
 END_PGML
@@ -101,4 +108,4 @@ b) Because there is a large peak on the left and a long tail to the right, this
 c) For this, total all of the heights of the bars.  The total heights of those over $30 is [$over30] and since there are [$total] students, this is about 10%. 
 END_PGML_SOLUTION
 
-ENDDOCUMENT();       # This should be the last executable line in the problem.
+ENDDOCUMENT();       # This should be the last executable line in the problem.