[الصمت القاتل]

السلام عليكم
في كم سؤال ماني فاهمه والوقت ضيق تكفووون ساعدوني
A survey from king abdulaziz university found that 23% of patients are
psmoker if 7 patients were selected at random answer questions
1- find the probabilty taht 3 of the patients are smoker .
2- find the probabilty taht less than 2 patients are smoker
3- find the probabilty taht at most 2 patients are smoker
4- find the mean of number of the patients who are smoker
بليييييييز ساعدوني اليوم الاختبار طفشت وانا احاول فيها