Question

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

Answer 1

The answer is "It is not highly probable".

Explanation:

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

Missing value:

`\bar x= 0.15\\\\s=0.06`

Solution:

`\to \ H_0 : \mu \leq 0.10\\\to H_1: \mu > 0.10`

Formula:

`Z= (x-\mu)/(s)\\\\`

`=(0.15- 0.10)/(0.06)\\\\=(0.05)/(0.06)\\\\=(0.05)/(0.06)\\\\=.833\\`

calculating the value of x:

formula:

`x=X(Z>z)`

`=0.833-0.841\\\\=-0.008`