# Probability Problems Help Apprecitated

• March 14th 2013, 11:39 AM
michellederz
Probability Problems Help Apprecitated
 x 1 2 3 4 P(x) 0.0531 0.23 0.3738 0.27 0.0731
The random X is defined in (g). Compute the mean of X. Report this and all subsequent anwers with 4 decimal places.

I keep getting: E(x) = $\Sigma$ $x P(x)$
(0.2300)+(0.7476)+(0.8100)+(0.2924) = 2.08
• March 14th 2013, 05:22 PM
chiro
Re: Probability Problems Help Apprecitated
Hey michellederz.

Checking with R, I get

> 1*0.23 + 2*0.3738 + 3*0.27 + 4*0.0731
[1] 2.08