- Example: P(Z>0.5)

Question: What proportion of the z distribution is greater than z = 0.5?

  1. In Minitab select Graph > Probability Distribution Plot > One Curve > View Probability, hit OK.
  2. Select Normal and enter 0 for the mean and 1 for the standard deviation.(Note: The default is the standard normal distribution)
  3. Select Options
  4. Select A specified x value
  5. Select Right Tail
  6. For X value enter 0.5
  7. Click OK

The proportion of the z distributions that falls above 0.5 is 0.3085.
z distribution showing the proportion under the curve greater than 0.5