title: Python: Random number generator with mean and Standard Deviation
body: <p>I need to know how to generate 1000 random numbers between 500 and 600 that has a mean = 550 and standard deviation = 30 in python. </p>
  
  <pre><code>import pylab
  import random
  
  xrandn = pylab.zeros(1000,float)
  
  for j in range(500,601):
  xrandn[j] = pylab.randn()
  
  ???????
  </code></pre>