all areas of the country use a BAC of .10 as the legal intozication level . is it possible that the mean BAC of all drivers involved in a fata accident

The answer is "It is not highly probable".

Step-by-step explanation:

In the given question some data is missing, that's why first we define value than its solution:

Missing value:

Solution:

Formula:

calculating the value of x:

formula:

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!