Question

a study by the university of texas southwestern medical center examined 826 people to see if an increased risk of contracting hepatitis c was associated with having a tattoo. if the subject had a tattoo, researchers asked whether it had been done in a commercial tattoo parlor or elsewhere. write a brief description of the association between tattooing and hepatitis c, including an appropriate graphical display. click the icon to view a contingency table for the data. a column percent contingency table best shows if there is an association between tattooing and hepatitis c. since the percents are different, the study provides evidence of an association. which graphical display below is appropriate for these data? options with images a, b, c, d as shown

Explanation:

To display the association between tattooing (perlor, elsewhere, none) and hepatitis C, we need a graph with tattoo categories (perlor, elsewhere, none) on the x - axis and percent on the y - axis, showing two groups (e.g., with/without hepatitis C) for each tattoo category. Option A has "Parlor", "Elsewhere", "None" on the x - axis and shows two groups (blue and red) for each, which is appropriate for comparing the percent with hepatitis C across tattoo categories. Other options either have incorrect x - axis categories (like hepatitis C on x - axis in C and D) or incorrect scaling/representation (B).

Answer:

A. The bar graph with "Parlor", "Elsewhere", "None" on the x - axis and two colored bars (representing different groups related to hepatitis C) for each category.