Refer to Exercise 10.76. There may be an indirect relation between employee age and medical plan preference: Age might be related to whether an employee has dependents covered, and whether dependents are covered might be related to medical plan preference.
a. Is there evidence of a significant relationship between the age of the employee and whether the employee has dependents covered by a plan? Use a = .05.
b. Is there evidence of a significant relationship between strength of preference for a medical plan and whether the employee has dependents covered by a plan? Use a = .05.
c. Finally, separately for the two groups of employees, test if there is evidence of a significant relationship between the age of the employee and preference for a medical plan? Use a = .05.
d. Based on the analyses in parts (a)€“(c), what are your conclusions about the relationships among the age of the employee, medical plan preference, and whether dependents are covered by a plan?
In exercise

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No Dependents Covered Medical Plan Preference Age of Employee Strong HMO Modest HMON 20-29 30-39 40-49 50-59 60 or older Modest For Fee Strong For Fee 13 17 1 or More Dependents Covered Medical Plan Preference A ge of Employee Strong HMO Modest HMO Neutral Modest For Fee Strong For Fee 20-29 30-39 40-49 50-59 60 or older 10 21 21 25 13 15 13 24 52