Предмет: Геометрия, автор: naukanbayeva

Срочно! Пожалуйста помогите!​

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Автор ответа: Solнышко
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Решение на фото. Удачи

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Дискретная случайная величина Х заданна законом распределения:

Х 2 4 8
Р 0,1 0,5 0,4


Найти среднеквадратическое отклонение этой величины.
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