Independence from Two Way Tables

Determine P(Female)

• 135/240

• 45/240

• 60/240

• 180/240

Let M represent the event of randomly selecting a male. Let S represent the event of randomly selecting a person that drives a SUV. Determine P(M|S).

• 60/156

• 21/156

• 21/60

• 21/240

Let M represent the event of randomly selecting a male. Let S represent the event of randomly selecting a person that drives a SUV.

Determine P(S|M).

• 21/156

• 21/240

• 21/60

• 60/156

Let M represent the event of randomly selecting a male. Let S represent the event of randomly selecting a person that drives a SUV.

Determine if the events M and S are independent.

• Independent

• Not Independent

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

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

• 12/54

• 42/54

• 12/35

• 42/75

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

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

• 6/15

• 9/15

• 6/56

• 9/44

What is the probability that a randomly selected student plays sports and does not participate in community service?

• .4444

• .3333

• .1484

• .3

Of the times when the forecast called for rain, what is the percentage that it actually rained?

• About 90%

• About 50%

• About 70%

• About 80%

What percent of people who bought no food purchased water?

• 14.3%

• 33.3%

• 5%

• 41.1%