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Question 130:



No answer provided yet.I believe what you might be looking for is the amount of area under the normal curve for each of the sigma values. Lets assume these are the 2-tailed areas (not 1-sided). We can look them up using a normal table of values or the z-score to percentile calculator or we can use the Excel function =NORMSDIST() and enter 1,2,3,4,5 and 6

We get the values :
  1. .8413
  2. .97725
  3. .99865
  4. .999968
  5. .99999971
  6. .99999999901

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