# Question

In 2007, data from two Youth Risk Behavior Surveys were analyzed to investigate seatbelt use among high school students ages 16 or older. The results were published in the September 2008 issue of American Journal of Preventive Medicine. Results (in percents) include the table that follows: If one student is selected at random from this population, what is the probability that the student selected:

a. Always uses a seatbelt when driving and always uses a seatbelt when a passenger?

b. Always uses a seatbelt when driving but not always when a passenger, given that he or she is 18 or older?

c. Does not always use a seatbelt when driving but always does when a passenger, knowing he or she is 16?

d. Always wears a seatbelt when driving?

e. Does not always wear a seatbelt when driving and is 17 years old?

a. Always uses a seatbelt when driving and always uses a seatbelt when a passenger?

b. Always uses a seatbelt when driving but not always when a passenger, given that he or she is 18 or older?

c. Does not always use a seatbelt when driving but always does when a passenger, knowing he or she is 16?

d. Always wears a seatbelt when driving?

e. Does not always wear a seatbelt when driving and is 17 years old?

## Answer to relevant Questions

The American Community Survey reported its findings about workers’ principal means of transportation to work during 2007. a. The column total is not included because it would be a meaningless value. Examine the table and ...Jason attends his high school reunion. Of the attendees, 50% are female. Common knowledge has it that 88% of people are right-handed. Being a left handed male, Jason knows that of a given crowd, only approximately 6% are ...A and B are events defined on a sample space, with P(B) = 0.5 and P(A and B) = 0.4 Find P(A|B) Suppose that A and B are events defined on a common sample space and that the following probabilities are known: P(A) = 0.3 P(B) = 0.4 and P (A/B) = 0.2 Find P (A or B). The table here shows the average number of births per day in the United States as reported by the CDC (Centers for Disease Control). Based on this information, what is the probability that one baby identified at random ...Post your question

0