A study provided data on variables that may be related to the number of weeks a manufacturing worker has been unemployed. The dependent variable in the study (Weeks) was dened as the number of weeks a worker has been unemployed due to layoff. The following independent variables were used in the study. Age: The age of the worker Educ: The number of years of education Married: A dummy variable: 1 if married, 0 otherwise Head: A dummy variable 1 if the head of household, 0 otherwise Tenure: The number of years on the previous job Manager: A dummy variable: 1 if management occupation, 0 otherwise Variable lCoef cient t statistic Age 2.401 4.29 Educ -1.20 4189 Married -1D.61 -1.33 Head -10.23 -2.89 Tenure 0.44 0.88 Manager -22.04 -2.48 Constant 23.74 1.16 Everything else equal, the average difference in week of unemployment between a 45-years old married person with a management occupation and a 20 years old married head of the family, with a 5 year Tenure and without a management occupation is