title: Why does the randn function return a number larger than 1?
body: <p>I thought <code>randn</code> returns a random number which belongs to a normal distribution with mean 0 and standard deviation 1. Therefore, I expect to get a number in the range (0, 1). But what I get is a number not in the range (0,1).</p>
  
  <p>What am I doing wrong?</p>