Предмет: Биология, автор: olgasimko46

Відомо, що ймовірність вилікувати хвору тварину вакциною А1 дорівнює 0,9, вакциною А2 – 0,8 і вакциною А3 – 0,7. Ці вакцини діють незалежним чином. Знайти ймовірність того, що застосування хоча б однієї з цих вакцин призведе до позитивного лікувального ефекту

Ответы

Автор ответа: Davinchii
0

Ответ:

Ймовірність того, що жодна з вакцин не спрацює, дорівнює добутку ймовірностей того, що кожна окрема вакцина не спрацює:

Тобто (1 - 0.9) * (1 - 0.8) * (1 - 0.7) = 0.006.

Таким чином, ймовірність того, що застосування хоча б однієї з цих вакцин призведе до позитивного лікувального ефекту, дорівнює:

1 - 0.006 = 0.994, ну або 99.4%.

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