• 2022-05-28
    设随机变量X和Y都服从参数为[tex=1.929x1.0]gxrfjGywTmMyUTlzuOosYw==[/tex]的指数分布,则[tex=12.643x1.357]IcFzvYYROzOUPF1gqhZFWYWrnUixQdXwk95aZrpWFjxnaMz8762I1fs/5Hdcq5jOMsLZ6mdXhnT/KB0cQUEF+w==[/tex][input=type:blank,size:4][/input].A.1B.2C.3D.4