Independence from Two Way Tables

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

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 has a permit, what is the probability the student is female?

• 15/29

• 33/59

• 15/60

• 15/120

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

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

Given a student doesn’t play soccer, what is the probability the student is male?

• 33/56

• 23/56

• 33/75

• 23/35

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

• 8/20

• 12/20

• 8/44

• 12/56

Given that the grade is a B, what is the probability of the student being male?

• 6/15

• 9/15

• 6/56

• 9/44

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

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

• 15/60

• 48/60

• 33/120

• 48/120

What percentage of the days that it rained, did they forecast no rain?

• About 20%

• About 18%

• About 14%

• About 12%