I would like check if it is possible to draw a number line that is similar to the one shown. And if it is possible, how should I go about doing it? Thank you!
\begin{tikzpicture}[
letter/.style={circle, minimum size=5pt, inner sep=0, outer sep=0, fill=black, label=below:#1},
number/.style={fill=white, pos=.5}
]
\draw (0,0) --
node(A)[letter=$0$,pos=.1]{}
node(B)[letter=$\mu$,pos=.2]{}
node(C)[letter=$\bar{c}$,pos=.7]{}
node(D)[letter=$d$,pos=.9]{}
(8,0)
;
\draw[ultra thick] (0.8,0) -- (5.6,0);
\end{tikzpicture}



