(1) Nornal + normal is not always a normal.
(2) if n normals are multivariate normally distributed,
then the sum of these n normals is a normal.
(3) Check" 3-series theorem" to ensure that the sum of a sequence
of normals is a normal.
以上，韓老師提供。
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上連續時，遇到類似的狀況，於是跟教授討論一下
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※ 編輯: sweap 來自: 140.114.203.201 (04/11 00:45)