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.
Credit Score
Class
Less than 650
650–750
More than 750
Income < $50,000
26
30
24
$50,000 ≤ Income < $100,000
63
53
44
$100,000 ≤ Income < $150,000
40
30
30
Income ≥ $150,000
21
17
22
Using α = 0.01, the critical value for this hypothesis test is
________, and your test statistics to use is _________. (Do
not use procedures for hypothesis testing, but you only need to
calculate critical value and test statistics for this
question)