已知一批零件的长度X(单位:cm)服从正态分布N(μ,1),从中随机地抽取16个零件,得到长度的平均值为40(cm),则μ的置信度为0.95的置信区间是().
.(37.51,42.49)
B、(39.51,40.49)
C、(35.51,44.49)
D、(36.51,43.49)
发布时间:2024-11-26 12:49:02
.(37.51,42.49)
B、(39.51,40.49)
C、(35.51,44.49)
D、(36.51,43.49)