Many fatal road accidents are due to preventable driver-related causes

Many fatal road accidents are due to preventable driver-related causes including drugs, alcohol, cell phone use, speeding, and failure to use a seatbelt or helmet. In 2014, 230 out of 265 fatal accidents were due to these driver-related causes. The deputy commissioner of the Ontario Provincial Police published this data so that people would know the seriousness of their actions and be more careful in future. “Most of the people who have died on our roads did not have to die,” he said.

a) Suppose that, during January of this year, 67% of fatal accidents were due to these driver-related causes. Is this year going to have a lower proportion of driver-related fatalities than 2014?

b) Suppose that, during the first half of this year, 82% of fatal accidents were due to these driver-related causes. Is this year going to have a lower proportion of driver-related fatalities than 2014?

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