title: In MATLAB, given a normal distribution about a value p how can I see the probability of p being greater than a value p*?
body: <p>I know the title is vague, in all honesty I'm having trouble putting my problem in to words. I want to say that given an initial value, which is a normal distribution about p, how can I find the probability that p>p*, where p* is a critical value.</p>
  
  <p>I.e. I take p = 1g (I'm working with drugs, so its 1 gram), and assume that this is normally distributed through cells in a culture. I know that having over a certain amount of drug in a cell will kill the cell, call that amount p*. How can I say how many cells will die because the amount of drug in them is greater than p*? </p>
  
  <p>I hope this makes sense.</p>
  
  <p>Many thanks.</p>