Healthcare Law and Ethics

In 2006 a five year old boy called 911 and told them that his mom had passed out. The operator scolded the boy and logged the call as a child's prank. Three hours later the boy called 911 again and another operator answered. She also scolded the boy but sent officers to the home. The officer found the boys mother lying unresponsive on the flood. EMS arrived 20 minutes later and determining that the woman was dead and probably died within the past two hours.

Are the 911 operators responsible for the mothers death?

Does the term precedent mean?