Probability and Two Way Tables

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 got an A or B for the semester?

• 15/100

• 20/100

• 35/100

• 65/100

What is the probability a randomly selected student is male?

• 12/100

• 17/100

• 44/100

• 56/100

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

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

What is the probability that a female is chose given they like a Toyota? 

• .525

• .4627

• .6774

• .3143

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

• .4444

• .3333

• .1484

• .3

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

P(Pizza|Senior):

• 10/15

• 4/5

• 2/3

• 10/5

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 male and a sergeant?

• 8/13

• 8/33

• 8/67

• 8/100