the following data represent the bounced check fee in dollars for a sample of 16 banks for direct- deposit customers who maintain a $100 balance. 25, 20, 28, 20, 21, 22, 18, 15, 30, 25, 18, 30, 30, 20, 16, 22 a) the bank accountant believes the average check bouncing fee is more $20. test the hypothesis H0: =20 vs Ha: >20 using a 0.05 level of confidence. be sure to state your conclusion. Solution 26 28 20 20 21 22 25 25 18 25 15 20 18 20 25 25 22 30 30 30 15 20 29.