Question

Математика 80 баллов!!!!

Answer 1

Ответ:

1.

$M(x) = 0.3 + 2 \times 0.1 + 3 \times 0.15 + 4 \times 0.21 + 25 \times 0.24 = \\ = 0.3 + 0.2 + 0.45 + 0.84 + 1.2 = 2.99$

$D(x) = (M(x))^{2} - M( {x}^{2} )$

$m( {x}^{2} ) = 0.3 + 4 \times 0.1 + 9 \times 0.15 + 16 \times 0.21 + 25 \times 0.24 = \\ = 0.3 + 0.4 + 1.35 + 3.36 + 6 = 11.41$

$D(x) = 11.41 - 8.9041 = 2.47$

$o(x) = \sqrt{D(x)} = \sqrt{2.47} =1.572$

2.

$p = 1 \\ P2 = 1 - P1 - P3 - P4 = \\ = 1 - 0.2 - 0.15 - 0.25 = 0.4$