SOLUTION: If the completion time for a task is normally distributed with a mean of 15 seconds and a standard deviation of 2.5 seconds, what is the probability of getting a time less than 9.7

Question 440002: If the completion time for a task is normally distributed with a mean of 15 seconds and a standard deviation of 2.5 seconds, what is the probability of getting a time less than 9.7 seconds?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!

 

Hi

*Note: 

   z = (9.7-15)/2.5 = -2.12

 P(z < -2.12) = NORMSDIST(-2.12)= .017

 

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