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August 4, 2015

Homework Help: Maths

Posted by kate on Thursday, August 23, 2007 at 1:18am.

A police officer gathered data on the speeds, in kilometres per hour (km/h), of some cars as they drove down hill towards her car. The speed limit is 50 km/h. Analysis of the results showed that the speeds of the cars were normally distributed with a mean speed of 56 km/h and a statndard deviation of 8 km/h.

" slow drivers" contribute to road rage problems and the officer noticed that 2 of the 150 drivers in her survey caused problems for other drivers beacuse of their slow speed. Use normal distrubution and this infomation to decribe a "slow" driver in terms of their driving.

thanks

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