Reference no: EM1397765

A study report in Journal of Small Business Management (1977) concluded that self-employed individuals experience higher job stress than individuals who are not self employed. In this study job stress was assessed with a 15-item scale designed to measure various aspects of ambiguity and role conflict. Rating for each of the 15 items were made using a scale with 1-5 response options ranging from strong agreement to strong disagreement. The sum of the ratings for the 15 items for each individual surveyed is between 15 and 75, with higher values indicating a higher degree of job stress.

Suppose that similar approach, using a 20-item scale with 1-5 response options, was used to measure the job stress of individuals for 15 randomly selected real estate agents, 15 architects, and 15 stock brokers. The stress levels of the three professions are given below:

Stress Level in Percent

Real Estate Architect Stockbroker

81 43 65

48 63 48

68 60 57

69 52 91

54 54 70

62 77 67

76 68 83

56 57 75

61 61 53

65 80 71

64 50 54

69 37 72

83 73 65

85 84 58

75 58 58

Using a = 0.05, test for any significant difference in job stress among the three professions [Put the data in excel first. Then use Tools, Data Analysis function, one-factor ANOVA. Show all five steps of hypothesis testing].