Probability from Two-Way Tables

Mathematical Equivalence

OFF

According to the table, what is the relative frequency of students ages 10 - 13 who eat breakfast?

• About 33%

• About 50%

• About 40%

• About 44%

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

• 4/30

• 7/30

• 2/15

• 14/30

According to the two-way table, a person who plays an instrument is most likely to:

• Not play an instrument

• Not play a team sport

• Play a team sport

• All of the above

Of the mechanical engineers, what is the probability that math is their favorite subject?

• 91

• 52%

• 17%

• 35%

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

• About 20%

• About 18%

• About 14%

• About 12%

Identify the join relative frequency of boys that have blond hair.

• .4

• 0.1

• 0.44

• 0.2

From everyone a student is selected at random, what is the probability they are female and play baseball?

• 23/100

• 36/100

• 23/36

• 13/100

From just the females, a student is selected at random, what is the probability they play football?

• 13/52

• 13/100

• 31/48

• 13/33

How many male students said NO to the fundraiser?

• 30

• 29

• 50

• 59