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Records on a fleet of trucks reveal that the average life of a set of spark plugs is normally distributed with a mean of 22,100 miles. The fleet owner purchased 18 sets and found that the sample average life was 23,400 miles; the sample standard deviation was 1,412 miles. What is the test statistic?
CPR
Cardiopulmonary Resuscitation, a lifesaving technique used in emergencies to restore blood flow and breathing in a person who is in cardiac arrest.
AED
An Automated External Defibrillator, a medical device designed to help people experiencing sudden cardiac arrest through defibrillation.
Emergency Call
A telephone call made to emergency services, such as police, fire, or ambulance, in a situation that requires immediate attention.
EMS
Emergency Medical Services, a system that provides urgent pre-hospital treatment and stabilization for serious illness and injuries and transport to definitive care.
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