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Консультация № 202147
09.02.2022, 08:59
0.00 руб.
1
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Здравствуйте, уважаемые эксперты! Прошу вас ответить на следующий вопрос, прикреплённый тут
Прикрепленные файлы:
Обсуждение
11.02.2022, 18:40
общий
это ответ
Здравствуйте, sz10208044!
Предлагаю Вам следующее решение задачи.
Как я понимаю, если сторона
равностороннего треугольника приближённо измерена в интервале 
и равномерно распределена на этом интервале, то
-- соответственно математическое ожидание и дисперсия случайной величины
Площадь
равностороннего треугольника выражается через длину его стороны по формуле
Плотность распределения случайной величины задаётся формулой
Поэтому
-- математическое ожидание случайной величины
(расчёт интеграла Вы можете увидеть по этой ссылке: Ссылка >>) -- дисперсия случайной величины
Предлагаю Вам следующее решение задачи.
Как я понимаю, если сторона
равностороннего треугольника приближённо измерена в интервале и равномерно распределена на этом интервале, то-- соответственно математическое ожидание и дисперсия случайной величины
Площадь
равностороннего треугольника выражается через длину его стороны по формулеПлотность распределения случайной величины
задаётся формулойПоэтому
-- математическое ожидание случайной величины
(расчёт интеграла Вы можете увидеть по этой ссылке: Ссылка >>) -- дисперсия случайной величины
5
спасибо большое!
Об авторе:
Facta loquuntur.
Facta loquuntur.
Форма ответа
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