In the following table,individuals are cross-classified by their age group and income level. 
For the chi-square test of independence,the value of the test statistic is ________.
Definitions:
Interest
Interest is the cost of borrowing money, typically expressed as a percent of the amount borrowed, paid by the borrower to the lender.
Interest Rate
The percentage of a loan charged as interest to the borrower, typically expressed as an annual percentage of the loan outstanding.
Expected Rate
The anticipated return or yield on an investment, often based on historical data or forecasts of future trends.
Total Investment
The overall amount of money invested in assets, projects, or securities by an individual or entity.
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