Final answer:
The statement about the average of 112 people dying each day in motor vehicle crashes is true. It is unlikely that more than 20 teens would die from such incidents on any single day based on the average of eight deaths. Determining the accuracy of the AAA's report that 54% of accidents are caused by driver error would require further statistical analysis.
Step-by-step explanation:
Nationally, an average of 112 people die each day in motor vehicle crashes, which equates to about one death every 13 minutes. This statement is True.
To provide a numerical justification, let's consider that there are 1440 minutes in a day. If one person dies every 13 minutes, then in a single day, approximately 1440 / 13 ≈ 110.77 deaths would occur. Rounding this number gives us 111 deaths, which is very close to the stated 112 deaths per day.
Concerning whether it is likely that more than 20 teens are killed from motor vehicle injuries on any given day in the United States, we use the reference average that eight teens die per day. This suggests that it is unlikely for the number to exceed 20 on any given day without significant deviation from the average.
In relation to crashes caused by driver error, when 30 randomly selected fatal accidents are examined with a result of 14 being due to driver error, this represents 14/30 or approximately 46.7%. To determine whether this is significantly different from the AAA-reported proportion of 54%, a hypothesis test would be necessary.
However, with the information provided, we cannot conclusively state the accuracy of the AAA proportion without conducting the test.