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A Car sales company is financing their customers' vehicles. Financing interest rates are as follows:
(I) For all motorcycles:
a. Customer Credit score 300 - 550
# Annual income US$ 40K-80K - Interest rate 15%
# Annual income US$ 81K-100K- Interest rate 12 %
# Annual income US $ 101K or more - Interest rate 9 %
b. Customer Credit score 551- 680
# Annual income US$ 40K-80K - Interest rate 12%
# Annual income US$ 81K-100K- Interest rate 9 %
# Annual income US $ 101K or more - Interest rate 7 %
c. Customer Credit score 681 or more
# Annual income US$ 40K-80K - Interest rate 10%
# Annual income US$ 81K-100K-Interest rate 6
# Annual income US $ 101K or more - Interest rate 5 %
(II) For all other vehicles the interest rate is 1 % less (from the values given above) for each category mentioned.
a) Ex: Customer Credit score 300 - 550
Annual income US$ 40K-80K - Interest rate 14% and so on.
What is the minimum number of test cases required to test the above application? (Hint: derive test cases using decision table technique using the decision table described in