Research Is Conducted Regarding the Average Age at Retirement for Four

question 1

Essay

Research is conducted regarding the average age at retirement for four career groups.To test whether there is a relationship between age of retirement and career in these groups,700 employees,recently retired,are randomly selected.The resulting data are displayed in the contingency table below.
Does the data provide sufficient evidence to conclude that an association exists between age of retirement and career? Use a 5% level of significance.

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