Probability practice

# 4 a standard admissions test was given at three

This preview shows pages 4–7. Sign up to view the full content.

4

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
A standard admissions test was given at three locations. One thousand students took the test  at location  A , 600 students at location  B , and 400 students at location  C . The percentages of  students from locations   A ,   B , and   C , who passed the test were 70%, 68%, and 77%,  respectively. One student is selected at random from among those who took the test.  29. What is the probability that the selected student passed the test? 30. If the selected student passed the test, what is the probability that the student took the test at  location  B ? 31. What is the probability that the selected student took the test at location  and failed?  5
Abby, Brenda, and Cameron; three candidates for the presidency of a college’s student body, are  to address a student forum. The forum’s organizer is to select the order in which the candidates  will give their speeches, and must do so in such a way that each possible order is equally likely to  be selected. 32. List the outcomes in the sample space. 33. Assign probabilities to the outcomes. 34. What is the probability that Cameron will speak first? 35. What is the probability that one of the women will speak first? 36. What is the probability that Abby will speak before Cameron does? A survey of a magazine’s subscribers indicates that 50% own a home, 80% own a car, and 90%  of the homeowners who subscribe also own a car. What proportion of subscribers 37. own both a car and a house? 38. own a car or a house, or both? 6

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
39. own neither a car nor a house? 7
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern