Memory Refreshing

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November 7th 2010, 03:07 AM
Dinkydoe

Memory Refreshing

I've done these excercises before, but It's not really fresh in my memory anymore..

Suppose $X_1,\cdots, X_n$ independant normal distributed stochasts with $\mu=5,\sigma^2=10$

How do we find c such that $P(5-c\leq \overline{X}\leq 5+c)=0.6$
November 7th 2010, 11:29 AM
mr fantastic

Quote:

Originally Posted by Dinkydoe

I've done these excercises before, but It's not really fresh in my memory anymore..

Suppose $X_1,\cdots, X_n$ independant normal distributed stochasts with $\mu=5,\sigma^2=10$

How do we find c such that $P(5-c\leq \overline{X}\leq 5+c)=0.6$

Start by getting the pdf for $\overline{X}$ .

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