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the critical speed of getting a ticket on highway

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Highways -car speed X~N(60 ml/h, 5ml/h)
That is, the car speed on highway is normally distributed with mean of 60 mph, and standard deviation of 5 mph.

If police tickets the top 5%, at what speed you expect to get a ticket?

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Solution Summary

The solution shows how to find out the speed at which you expect to get a ticket on highway.

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Please see the attached file for detailed solution.

Therefore, speed above 68.22 miles per hour would be ...

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