- Example: P(SATM<540) - Example: P(SATM<540)

Question: SAT-Math scores are normally distributed with a mean of 500 and standard deviation of 100. What proportion of scores are less than 540?

  1. In Minitab choose Graph > Probability Distribution Plot
  2. For Distribution select Normal (Note: This is the default)
  3. For Mean enter 500
  4. For Standard deviation enter 100
  5. Select Options
  6. Select A specified X value
  7. Select Left tail
  8. For X value enter 540

The proportion of scores less than 540 is 0.6554.

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