Вероятность и статистика в примерах и задачах. Том 1. Основные понятия теории вероятностей и математической статистики

“ At the end of your life, you will never regret not having passed one more test, not winning one more verdict or not closing one more deal. You will regret time not spent with a husband, a friend, a child, or a parent. ” ― Barbara Bush