Mathematics, 19.03.2020 08:59 19jcormier
The mean time it takes for workers at a factory to insert a delicate bolt into an engine is 15 minutes. The standard deviation of time to insert the bolt is 4.0 minutes and the distribution of time is approximately Normally distributed. For a randomly selected worker, what is the approximate probability the bolt will be inserted in 19 minutes or less
Answers: 2
minutes, standard deviation 
seconds, we need to find 
. Using z score
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