Question: The lesson is about normal distribution, can you help me understand the solution for this? If it will not bother you, please elaborate :> THANK

The lesson is about normal distribution, can you help me understand the solution for this? If it will not bother you, please elaborate :> THANK YOU!

A traffic study of 1,600 vehicles that passed by a checkpoint showed that their speeds were normally distributed with a mean of 97.6 a standard deviation of 10.4. How many vehicles had a speed of more than 100?

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