Roll a Die question help please

Nov 2012
3
0
Toronto
if i roll a die 600 times. whats the mean and standard deviation of the number of 3's that show?
 

skeeter

MHF Helper
Jun 2008
16,217
6,765
North Texas
probability problems go in the statistics forum
 

Plato

MHF Helper
Aug 2006
22,490
8,653
if i roll a die 600 times. whats the mean and standard deviation of the number of 3's that show?

If \(\displaystyle p\) is the probability of success and \(\displaystyle N\) is the number of trials then the mean is \(\displaystyle \mu=p\cdot N\) and \(\displaystyle \sigma=\sqrt{Np(1-p)}\).