Suppose Bank of America would like to investigate if the credit score and income level of an individual are independent

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Suppose Bank of America would like to investigate if the credit
score and income level of an individual are independent of one
another. Bank of America selected a random sample of 400 adults and
asked them to report their credit score range and their income
range. The following contingency table presents these
results.
The test statistic for this sample is ________.
Multiple Choice
7.734
9.288
13.019
16.544