A. I live in the town of Springfield, where there are 100,000 adults with some type of genetic disease that has affected 0.1%. Apparently the test for this disease is 98% accurate. All the adults in my town were also tested for this disease.

a. How many in my town have the disease?

b. How many actually have the disease have tested +?

c. How many don't have but test +?

d. What is the actual percent of the folks who have + test results and disease?

B. Both genetic testing were 98% accurate. Why are the percentages between the two are so different?

C. How does the rarity of the disease affects the testing results?