§ Задание 267
\[\boxed{\mathbf{267.}}\]
\[\textbf{а)};б)\]
| \[X - EX\] | \[- 1,5\] | \[- 0,5\] | \[0,5\] | \[1,5\] |
|---|---|---|---|---|
| \[(X - EX)^{2}\] | \[2,25\] | \[0,25\] | \[0,25\] | \[2,25\] |
| \[Вероятность\] | \[0,2\] | \[0,3\] | \[0,3\] | \[0,2\] |

\[\textbf{г)}\ \sqrt{1,05} \approx 1,025.\]
