title: Adding a number to a date in excel (with an average and st dev)
body: <p>I have a list of dates. They're dummy data for sign up dates.</p>
  
  <p>I want to add another list that is dummy data for first usage dates.</p>
  
  <p>To make the dates, I used this - </p>
  
  <pre><code>=RANDBETWEEN(DATE(2017,1,1),DATE(2017,6,30))
  </code></pre>
  
  <p>To make the first usages dates, I'm trying this - </p>
  
  <pre><code>=C6+RANDBETWEEN(0,100)
  </code></pre>
  
  <p>But, I don't want to just add a random number. I want to add a number from a normal distribution with a mean of 10 and a standard deviation of 30 (without going into negatives). Is that possible?</p>