Question: A study reported in the Journal of Small Business Management concluded that self-

employed individuals do not experience higher job satisfaction than individuals who are

not self-employed. In this study, job satisfaction is measured using 18 items, each of which

is rated using a Likert-type scale with 1–5 response options ranging from strong agreement

to strong disagreement. A higher score on this scale indicates a higher degree of job satis-

faction. The sum of the ratings for the 18 items, ranging from 18-90, is used as the mea-

sure of job satisfaction. Suppose that this approach was used to measure the job satisfaction

for lawyers, physical therapists, cabinetmakers, and systems analysts. The results obtained

for a sample of 10 individuals from each profession follow.

Lawyer Physical Therapist Cabinetmaker Systems Analyst

44 55 54 44

42 78 65 73

74 80 79 71
42 86 69 60

53 60 79 64

50 59 64 66
45 62 59 41

48 52 78 55

64 55 84 76
38 50 60 62

At the α= .05 level of significance, test for any difference in the job satisfaction among the four professions.