2. Many people lost their jobs during economic slowdown caused by the COVID-19 pandemic. An industrial and organizational psychologist studied the degree of psychological stress of job seekers. A sample of 63 job seekers is randomly selected. Their ages were classified into three levels: (1) younger than 40 years,

(2) 40 to 55 years, and (3) older than 55 years. The descriptive statistics of psychological stress scores for all three groups were reported in Table 12.9. Higher numbers mean higher reported psychological stress.