\[\boxed{\mathbf{322.}}\]
\[S^{2} = 19 - 0 = 19;\]
\[S = \sqrt{19} \approx 4,36.\]
\[\textbf{а)}\ \lbrack - 4,36;4,36\rbrack.\]
\[\textbf{б)} - 4;\ - 3;\ - 1;0;3.\]
\[\textbf{в)} - 6;\ - 5.\]
\[\textbf{г)}\ 6;7.\]