Compound Probability from Tables

Mathematical Equivalence

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What is the probability a randomly selected student is male and has a provisional license?

• 14/60

• 26/60

• 14/120

• 26/120

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

Given that the grade is an A, what is the probability of the student being female?

• 8/20

• 12/20

• 8/44

• 12/56

The make-up of employees at a police station is shown in the table above:

What is the probability that a randomly selected employee is a chief?

• 1/100

• 2/100

• 1/33

• 1/67

Given the employee is a chief, what is the probability the employee is male?

• 1/100

• 1/33

• 1/2

• 1/67

The make-up of employees at a police station is shown in the table above:

Given the employee is a female, what is the probability of the employee being a chief?

• 1/2

• 1/33

• 1/67

• 1/100

Chelsea surveyed a sample of students in the senior class to determine the distribution of students with a driver’s license.

What is the probability a randomly selected student is female and can drive?

• 15/60

• 48/60

• 33/120

• 48/120

Chelsea surveyed a sample of students in the senior class to determine the distribution of students with a driver’s license.

Given that a student is male, what is the probability the student can’t drive?

• 12/60

• 12/120

• 20/60

• 20/120

The question “Do you play soccer?” was asked of 110 students. Results are shown in the table.

What is the probability a randomly selected student is male and does not play soccer?

• 42/110

• 33/110

• 12/110

• 23/110

The question “Do you play soccer?” was asked of 110 students. Results are shown in the table.

Given a student plays soccer, what is the probability the student is female?

• 12/54

• 42/54

• 12/35

• 42/75