Constructing Two Way Tables

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 is the relative frequency of people that purchased no food?

• 10%

• 60%

• 15%

• 30%

The table shows the different types of engineers and the subject they liked most.  What percentage of people surveyed were chemical engineers who preferred math?

• 16.5%

• 33.1%

• 17.6%

• 15.5%

What percentage of the students have brown hair?

• 25%

• 60%

• 45%

• 50%

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

P(Pizza|Senior):

• 10/15

• 4/5

• 2/3

• 10/5

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

• .4444

• .3333

• .1484

• .3

What percent of people who bought no food purchased water?

• 14.3%

• 33.3%

• 5%

• 41.1%

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