题目8.单选题(1分)设随机变量随机变量X~N(1,4),Y=2X+1,则Y服从的分布为()A. N(3,4)B. N(3,8)C. N(3,16)D. N(3,17)8.单选题(1分) 设随机变量随机变量X~N(1,4),Y=2X+1,则Y服从的分布为()A. N(3,4)B. N(3,8)C. N(3,16)D. N(3,17)题目解答答案C. N(3,16)