Is there a way to combine the graphic of a ListPlot to the graphic of a Plot? (I need to plot a graphic of a function on the graphic of a ListPlot)
From your second line, I think Epilog is what you are looking for. Here's an example:
f[x_] := 1/Sqrt[2 Pi] Exp[-(x^2)/2];
ListPlot[
Table[
{x, PDF[NormalDistribution[], x]}, {x, -4, 4, 0.1}
],
Epilog -> First@Plot[f[x], {x, -4, 4}, PlotStyle -> Red]
]

Another way to do the same would be to use Show
p1 = ListPlot[
Table[
{x, PDF[NormalDistribution[], x]}, {x, -4, 4, 0.1}
]
];
p2 = Plot[f[x], {x, -4, 4}, PlotStyle -> Red];
Show[p1,p2]
On the other hand, if I was mistaken and you just wanted to combine them in the sense one next to the other, then you can use GraphicsRow or GraphicsColumn.
FullGraphics@GraphicsRow[{p1, p2}]
