Question

effect of blood alcohol concentration (bac) on motor vehicle crashes
about how much higher is the risk of a vehicle crash at a bac of 0.10 percent than a bac of 0.00 percent?
about 5 times as likely
about how much higher is the risk of a vehicle crash at a bac of 0.16 percent than a bac of 0.00 percent?
about 5 times as likely
about 10 times as likely
about 15 times as likely
about 25 times as likely

Explanation:

Step1: Analyze the graph

The y - axis represents the relative likelihood of causing a crash. At BAC = 0.00, the relative likelihood is near 1 (since it's the baseline). At BAC = 0.16, looking at the y - value of the curve, it is approximately 25.

Step2: Calculate the ratio

The ratio of the risk at BAC = 0.16 to the risk at BAC = 0.00 is \(\frac{\text{Relative Likelihood at }0.16}{\text{Relative Likelihood at }0.00}\). Since the relative likelihood at 0.00 is about 1 (baseline) and at 0.16 is about 25.

Answer:

about 25 times as likely