minor updates to paper

Author: jeremymanning

paper/main.pdf

@@ -1355,7 +1355,7 @@ \subsubsection*{Estimating the ``smoothness'' of knowledge}\label{subsec:smoothn
 proportion correct on each of the three quizzes, separately. To compute this
 interval for each quiz, we repeatedly (1,000 times) subsampled participants
 (with replacement, from the outer subsample for the current iteration) and
-computed the mean proportion correct each of these inner subsamples. We then
+computed the mean proportion correct of each of these inner subsamples. We then
 identified the 2.5\textsuperscript{th} and 97.5\textsuperscript{th} percentiles
 of the resulting distributions of 1,000 means. These three intervals (one for
 each quiz) served as our thresholds for confidence that the proportion correct