Probability on a Two-Way Table

The two-way table above gives information about the grades for the semester in Mrs. Hardcase’s English class.

What is the probability a randomly selected student earned a passing grade?

• 20/100

• 35/100

• 65/100

• 87/100

What percentage of the students have brown hair?

• 25%

• 60%

• 45%

• 50%

What is the probability that a randomly selected student plays sports given that they do not do community service?

What is the probability that a student plays sports given that they do community service?

What is the probability that a student takes Latin given that they participate in a club?

What is the probability that a student does not participate in a club given that they take sign language?

P(Pizza|Senior):

• 15/10

• 4/5

• 10/15

• 10/5

P(Pizza ∩ Water) =

• 62/182

• 120/400

• 58/400

• 140/400

Out of those surveyed, what is the probability that the student is a boy who can't bike to school (in simplest form)?

• 7/15

• 7/30

• 2/15

• 1/3

What is the probability that they speak French given they are a girl? 

• 2.14

• 24

• 4

• 8571