Within a given population, 22 percent of the people are smokers, 57 percent of the people are males, and 12 percent are males who smoke. If a person is chosen at random from the population, what is the probability that the selected person is either a male or a smoker?

Given the contingency table shown here, find P( B). Age Absences Under 25 (A) 25 or More (A’) Row Total Under 2 days (B) 50 40 90 2 or more days (B’) 30 80 110 Column Total 80 120 200

From the following tree, find the probability that a randomly chosen person will get the flu vaccine and will also get the flu.

Which of the following correctly describes the flow of cerebrospinal fluid (CSF) through the ventricular system?

What state did not send delegates to the Constitutional convention?

what is number 4? 

What is the indicated structure on the image below? 

what is number 8? 

Name the structure highlighted in red that separates the right and left hemispheres of the brain.   

What is number 7 on this image?