Dr. Raymond Lim wants to investigate the relationship between stress and job satisfaction. To begin, he developed a profile for stress based on assigning points for significant events, such as the death of a spouse, a change in sleeping habits, a change in eating habits, and the addition of a family member. Job satisfaction was also based on points assigned for salary, ability to get along with co-workers, and the job environment. Dr. Lim sampled 25 workers in the technology sector and found that the correlation between stress and job satisfaction was -0.536.
a. Does job satisfaction seem to increase or decrease as stress increases?
b. How much of the variation in stress is accounted for by the variation in job satisfaction?
c. At the 0.05 significance level, is it reasonable to conclude there is negative association between stress and job satisfaction?