The manager of credit card operations for a small regional bank has determined that last year€™s median credit card balance was $1,989.32. A sample of 18 customer balances this year revealed the following figures, in dollars:

Based on the 18 customer balances sampled, is there enough evidence to allow you to conclude the median balance has changed? Test at the 0.05 level of significance.

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Sample I Sample 2 Sample 3 Sampe 4 Sample 5 Sample 6 1.827.85 992.75 2,012.35 ,955.64 2.023.19 1998.52 Sample 7 Sample 8 Sampl9 Sample 10 Sample 1 Sample 12 2.003.75 1,752.55 1865.32 2.013.13 2.225.35 2.100.35 Sample 13 Sample 14 Sample 15 Sample 16 Sample 17 Sample 18 2.002.02 850.37 995.35 2.001.18 2.252.54 2.035.75