Statistics Conditional Probability

45% total of the children in a school have a dog, 30% total have a cat, and 18% have a dog and cat. What percent of those who have a cat also have a dog?

• 60%

• 40%

• 24%

• 1.7%

An international class has 50 students from three different countries. If a student is chosen at random from this class, what is the probability that they speak French, given that they are a girl?

• 0.14

• 0.24

• 0.4

• 0.8571

A student who completed this survey is chosen at random. What is the probability that this student does not play on a sports team, given that they do not play an instrument?

• 0.50

• 0.78

• 0.55

• 0.15

An international class has 50 students from three different countries. If a student is chosen at random from this class, what is the probability that the student picked will be a boy, given they speak German?

• 0.7273

• 0.4

• 0.16

• 0.22

A student who completed this survey is chosen at random. What is the probability that this student plays a sport, given they do not play an instrument?

• 0.20

• 0.22

• 0.18

• 0.70

A person is picked at random from a group described by this table. What is the probability that they have blonde hair, given that they are a girl?

• 30%

• 32%

• 29%

• 40%

What is the probability that a student chosen at random from the group described in this table does chores, given that they have an allowance?

• 72%

• 81%

• 52%

• 11%

A driver is chosen at random from the group described in this table. What is the probability that a chosen driver who is female drives a Honda?

• 0.5278

• 0.4750

• 0.2836

• 0.4030

P(Pizza|Senior) =

• 1/3

• 4/5

• 2/3

• 1/2

P(Senior | Pizza) =

• 10/15

• 4/5

• 2/3

• 1/2