1. You randomly survey people in the mall about whether or not they regularly use text messaging. The results are shown in the tally sheets below based on the people's ages.

1. Make a two-way table that includes the marginal frequencies.
2. Make a two-way table that shows both the joint and marginal relative frequencies. Round to the nearest hundredth, if necessary.
3. What is the probability that someone who is between the ages of 20-29 also texts regularly?
4. What is the probability that someone who is between the ages of 40-49 also texts regularly?
5. Does the data show a relationship between age and texting? Explain.

Statistics Unit Project