Posted by Sarah on .
If the standard deviation for waiting times in a line is 5 minutes, the standard deviation for the averages of 30 randomly chosen waiting times is _____ minutes.

statistics 
PsyDAG,
SEm = standard error(deviation) of the mean
SEm = SD/√n 
statistics 
poot lovato,
0.9

statistics 
judy,
.9

statistics 
Anonymous,
0.9