試卷名稱:112年 - SOCIETY OF ACTUARIES_EXAM P PROBABILITY_EXAM P SAMPLE QUESTIONS 51-100#119910
年份:112年
科目:Exam P:Probability機率
57. The warranty on a machine specifies that it will be replaced at failure or age 4, whichever occurs first. The machine’s age at failure, X, has density function
Let Y be the age of the machine at the time of replacement.
Calculate the variance of Y.
(A) 1.3
(B) 1.4
(C) 1.7
(D) 2.1
(E) 7.5