Multiple Random Variables

**Hitman6267** · August 1st 2010, 11:09 AM

can some one tell me what I need to do ? I'm lost.

I don't see what relationship I need to use to calculate their average.

**gustavodecastro** · August 1st 2010, 10:25 PM

a) Try to use the CLT. You have to calculate $P(|\bar{X} - mu| \geq 6)$ using the change of variable $Z = (\bar{X} - \mu)/\var{\bar{X}}$

b) Since all the variables are independent,
$E(e^{t\sum_{k=1}^{36} X_k}) = E(e^{tX_1}) \dots E(e^{tX_{36}}) = \left(E(e^{tX_1})\right)^{36}$
and since you the distribution of X, you know the mgf.

Thread: Multiple Random Variables

LinkBack

Thread Tools

Display

Multiple Random Variables

Similar Math Help Forum Discussions

random variables separable into 2 functions integrated over the same variables

What's the difference between discrete random variables and continous random variable

Joint PMFs of Multiple Random Variables - Urgent Help

Marginalization of multiple random variables

Problems with multiple variables

Search Tags