Chapter 3, Problem 41E

Blood pressure A company held a blood pressure screening clinic for its employees. The results are summarized in the table below by Age and Blood pressure:

1. a) Find the marginal distribution of blood pressure level.
2. b) Find the conditional distribution of blood pressure level within each age group.
3. c) Compare these distributions with a segmented bar graph.
4. d) Write a brief description of the association between age and blood pressure among these employees.
5. e) Does this prove that people’s blood pressure increases as they age? Explain.