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

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

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's the approximate probability the bolt will be inserted in 19 minutes or less? Round to the nearest whole percent.

▸ 16%

▸ 18%

▸ 84%

▸ 50%

Textbook

Introductory Statistics: Exploring the World Through Data

Edition: 2^nd

Authors: Gould, Ryan

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anhsu Author

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Thanks

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Smart ... Thanks!

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