\begin{axis}[%
ymax=60,
ymin=0,
xmax=4,
xmin=0,
ylabel=liklihood to use word,
xlabel=minutes into class,
every tick/.style={thick,black,decorate},
xtick={1,2,3},
xticklabels={10,20,30},
ytick=\empty,
axis x line=middle,
axis y line=middle,
every inner x axis line/.append style={-},
every inner y axis line/.append style={-},
every axis x label/.style={at={($(current bounding box.south)+(0,-5pt)$)}},
every axis y label/.style={rotate=90,at={($(current bounding box.west)+(-5pt,0)$)}},
decoration={random steps,segment length=5pt,amplitude=0.3pt},decorate,