lee22042017
New member
- Joined
- Mar 26, 2022
- Messages
- 6
What you posted doesn't make sense or incompleteView attachment 31871
My final goal is to find the variance and mean of S.
I have no idea at all, so I would like to find out what happens to the Normal distribution when it is substracted by a constant first.
Xi = Yi - 816 when y > 816. Thanks a lotWhat you posted doesn't make sense or incomplete
What is [imath]Y_i?[/imath]
N is the index, how can it be independent?
You defined [imath]S=\sum_{i=1}^{N}X_i[/imath], where does [imath]Y_i[/imath] come into play?
Perhaps attach the original problem.
In general,
If [imath]X\sim N(\mu,\sigma^2)[/imath] then,
(1) [imath]X+c\sim N(\mu+c,\sigma^2)[/imath]
(2) [imath]cX\sim N(c\mu,c^2\sigma^2)[/imath]
Xi = Yi - 816 when y > 816. Thanks a lot