The accessory choices of 143 people are recorded in the table. 

Create a relative frequency table that could be used to show the percentages of belt wearers who wear a watch or not as well as the percentages of people without belts who wear a watch or not.

Scientists give two different treatments to people who have the flu and determine if their health improves. The results for the experiment are in the two-way table.

1. What percentage of people receiving treatment 1 had improved health?
2. What percentage of people receiving treatment 2 had improved health?

A group of people are surveyed about whether they enjoy dancing or not and whether they listen to music while doing chores or not.

Of all the people that do not listen to music while doing chores, 37.5% do not enjoy dancing. Which of the following values could go in the blank cell?

Many adults are selected at random to respond to a survey about their favorite season and whether they have allergies or not. The two-way table summarizes the results from the survey.

1. Which season is the least popular in this group?
2. How many more people in this group have allergies than do not have allergies?
3. How many people were surveyed in this group?

A random sample of people are asked about their preferences regarding home decoration and their interest in fashion. Complete the two-way table so it has the characteristics listed.

• 150 people responded to the survey.
• 70% of the responders do not pay attention to fashion.
• 33 of the responders who prefer neutral decorations also do not pay attention to fashion.
• 20 of the responders who pay attention to fashion also prefer colorful decorations in their homes.