The median amount of accounts payable to a CVS retail outlet in May 2007 is believed to be $78.50. Conduct a test to assess whether this assumption is still true after several changes in company operations have taken place. A random sample of 30 accounts is collected. The data follow (in dollars):
34.12, 58.90, 73.25, 33.70, 69.00, 70.53, 12.68, 100.00, 82.55, 23.12, 57.55, 124.20, 89.60, 79.00, 150.13, 30.35, 42.45, 50.00, 90.25, 65.20, 22.28, 165.00, 120.00, 97.25, 78.45, 24.57, 12.11, 5.30, 234.00, 76.65