当某测定值在该总体的均值±2s的范围内,其可信度是( )A、90.5%B、99.5%C、95.5%D、95.0%E、90.0%
当某测定值在该总体的均值±2s的范围内,其可信度是( )
A、90.5%
B、99.5%
C、95.5%
D、95.0%
E、90.0%
相关考题:
x _+1. 96s范围内的变量值有A.47.5%B.45. 0%C.90.0%D.95.0% x _+1. 96s范围内的变量值有A.47.5%B.45. 0%C.90.0%D.95.0%E.50.0%
煤浆粒度最佳分布为()。A、8目,100%;14目,99.0%;40目,90.0%;325目,50%B、8目,100%;14目,99.5%;40目,90.0%;325目,45%C、8目,100%;14目,99.9%;40目,90.5%;325目,55%D、8目,100%;14目,99.5%;40目,90.0%;325目,55%
单选题煤浆粒度最佳分布为()。A8目,100%;14目,99.0%;40目,90.0%;325目,50%B8目,100%;14目,99.5%;40目,90.0%;325目,45%C8目,100%;14目,99.9%;40目,90.5%;325目,55%D8目,100%;14目,99.5%;40目,90.0%;325目,55%
单选题正态分布曲线下,X±1.96S的范围包括全部变量值的百分数是()A80.0%B90.0%C95.0%D99.0%E99.5%