Mathematics, 17.07.2019 19:50, ramamullapudi3639

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? round to the nearest whole percent.

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The mean time it takes for workers at a factory to insert a delicate bolt into an engine is 15 minut...