Question

Because everyone is always driving above the speed limit, the police implement a new policy: ticket anyone who drives 1.5 standard deviations above the average. At a major freeway, the average speed in the evening is 75 MPH. The standard deviation is 7 MPH. Michael finds himself driving at 84 MPH during an evening on this freeway. At a major street, the average speed is 43 MPH. The standard deviation is 4 MPH. Nico finds himself driving at 50 MPH. Use the information above to determine who will get a speeding ticket?

Answer 1

Michael is within the speed limit regulation he won´t get any ticket

Nico is over speed limit then he should be ticket

Explanation:

Case A conditions in a freeway evening average speed 75 MPH the

standard deviation is 7 MPH

Then according to new policy 75 + 7* ( 1,5 ) = 75 + 10,5 = 85,5 MPH

Michael is driving at 84 MPH then he has no problem at all

Case B conditions in a major street average speed 43 MPH the standard deviation is 4 MPH

According to the new policy 43 + 4 *(1,5) = 43 + 6 = 49 MPH

Nico is driving at 50 MPH then Nico will be ticket