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

Answer:

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:

$\bar x= 0.15\\\\s=0.06$

Solution:

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

Formula:

$Z= \frac{x-\mu}{s}$

   $=\frac{0.15- 0.10}{0.06}\\\\=\frac{0.05}{0.06}\\\\=\frac{0.05}{0.06}\\\\=.833$

calculating the value of x:

formula:

$x=X(Z>z)$

   $=0.833-0.841\\\\=-0.008$