Chapter 14.5, Problem 27E

To identify high-paying jobs for people who do not like stress, the following data were collected showing the average annual salary ($1000s) and the stress tolerance for a variety of occupations (Business Insider, November 8, 2013).

Job	Average Annual Salary ($1000s)	Stress Tolerance
Art directors	81	69.0
Astronomers	96	62.0
Audiologists	70	67.5
Dental hygienists	70	71.3
Economists	92	63.3
Engineers	92	69.5
Law teachers	100	62.8
Optometrists	98	65.5
Political scientists	102	60.1
Urban and regional planners	65	69.0

The stress tolerance for each job is rated on a scale from 0 to 100, where a lower rating indicates less stress.

1. a. Develop a scatter diagram for these data with average annual salary as the independent variable. What does the scatter diagram indicate about the relationship between the two variables?
2. b. Use these data to develop an estimated regression equation that can be used to predict stress tolerance given the average annual salary.
3. c. At the .05 level of significance, does there appear to be a significant statistical relationship between the two variables?
4. d. Would you feel comfortable in predicting the stress tolerance for a different occupation given the average annual salary for the occupation? Explain.
5. e. Does the relationship between average annual salary and stress tolerance for these data seem reasonable to you? Explain.