Flores and Tomany-Korman (2008) examined racial/ethnic disparities in medical and oral health, access to care, and use of services using the National Survey of Children's Health, a telephone survey in 2003-2004 of a national random sample of parents and guardians of 102,353 children 0 to 17 years old. They noted many significant disparities. Uninsured percentages were 6% for whites, 21% for Latinos, 15% for Native Americans, 7% for African Americans, and 4% for Asians or Pacific Islanders. The percentages of those with a usual source of care were 90% for whites, 61% for Native Americans, 68% for Latinos, 77% for African Americans, and 87% for Asians or Pacific Islanders. The number 6% represents:

Select one:

a. Paramenter

b. Population size

c. Statistic

d. Sample size

e. None of the above

In a group of 40 people, 10 people are healthy. The 30 unhealthy people have either high blood pressure, high cholesterol, or both. Suppose 15 have high blood pressure and 25 have high cholesterol. If a person is randomly selected from this group, what is the probability that they have both high blood pressure and high cholesterol? Drawing a Venn diagram will help!

Select one:

a. 0.38

b. 0.63

c. 0.75

d. 1.00

e. 0.25

Do seat belts save lives? A public health researcher conducted a cross-sectional study of fatality outcomes and seat belt use of 100 victims of motor vehicle accidents in a large city over the course of one month. There were a total of 30 deaths. Of the 100 victims, 50 wore seat belts. Of those victims who wore seat belts, 10 died. What is the probability that a victim randomly selected from this group was alive, given that they did not wear a seat belt? Filling in the following table will help.

Driver Seat Belt Alive Dead Row Totals Worn 40 10 50 Not Worn 30 20 50 Column Totals 70 30 100