Conditional probability Quiz

Name: ______________________   Date: __________   Score: ____ / 10

10 questions. Calculator allowed. Show your working. steplyclass.com/probability/conditional-probability/quiz/

1. 1

   Boys 12 cat 8 dog, girls 10 cat 20 dog, P(dog given girl)

   Answer: ____________________

2. 2

   Boys 5 yes 15 no, girls 10 yes 10 no, P(yes given girl)

   Answer: ____________________

3. 3

   Adults 30 tea 10 coffee, children 5 tea 15 coffee, P(coffee given adult)

   Answer: ____________________

4. 4

   Men 16 yes 4 no, women 12 yes 8 no, P(yes given man)

   Answer: ____________________

5. 5

   Adults 30 tea 10 coffee, children 5 tea 15 coffee, P(adult given tea)

   Answer: ____________________

6. 6

   Juniors 8 bus 12 car, seniors 6 bus 14 car, P(senior given car)

   Answer: ____________________

7. 7

   A bag has 4 red and 2 blue marbles, two are picked without replacement, P(second blue given first red)

   Answer: ____________________

8. 8

   A bag has 5 red and 3 blue marbles, two are picked without replacement, P(second blue given first blue)

   Answer: ____________________

9. 9

   Men 24 yes 16 no, women 18 yes 22 no, P(man given yes)

   Answer: ____________________

10. 10

    Boys 15 bike 25 walk, girls 20 bike 20 walk, P(girl given bike)

    Answer: ____________________