Final answer:
To calculate the percentage of young drivers involved in fatal crashes in Michigan who were not wearing a seat belt, divide the number of young drivers involved in fatal crashes without seat belts by the total number of young drivers involved in fatal crashes and multiply by 100%.
Step-by-step explanation:
In Michigan, the percentage of young drivers involved in fatal crashes who were not wearing a seat belt can be calculated using the formula:
Percentage = (Number of young drivers involved in fatal crashes without seat belts / Total number of young drivers involved in fatal crashes) x 100%
For example, if out of 100 young drivers involved in fatal crashes, 20 were not wearing seat belts, the percentage would be:
Percentage = (20 / 100) x 100% = 20%