Research Is Conducted Regarding the Average Age at Retirement for Four

question 10

Multiple Choice

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. $\begin{array}{|l|c|c|c|c|c|}&&\text { age at retirement}\\\hline career& 50-55 & 56-60 & 61-65 & \text { Over } 65 & \text { Total } \\\hline \text { Attorney } & 10 & 40 & 75 & 40 & 165 \\\hline \begin{array}{l}\text { College } \\\text { Professor }\end{array} & 5 & 30 & 80 & 60 & 175 \\\hline \text { Secretary } & 21 & 45 & 63 & 49 & 178 \\\hline \text { Store Clerk } & 18 & 44 & 70 & 50 & 182 \\\hline \text { Total } & 54 & 159 & 288 & 199 & 700 \\\hline\end{array}$ How many degrees of freedom are there for the chi-square test statistic?

• A)12
• B)9
• C)16
• D)20
• E)25

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Definitions:

Miscellaneous Expense

General ledger accounts for expenses that are not sufficiently large or regular enough to be allocated to specific expense categories.

Bank Statement

A monthly document provided by a bank detailing all transactions in a customer's account for a given period.

Note Receivable

A financial asset representing a written promise from a borrower to pay a certain sum of money to the lender at a future date.

Interest Collected

The amount of money received by an entity as interest from loans, investments, or savings accounts.