In some firefighting organizations, you must serve as a firefighter for some period of time before you can become part of the emergency medical service arm of the organization. Does that mean EMS workers are older, on average, than traditional firefighters? Use the data shown and a = .05 to test whether EMS workers are significantly older than firefighters.

Assume the two groups are independent and you do no want to use a t test to analyze thedata.

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EMS EMS Firefighters Workers Firefighters Workers 39 23 37 28 25 41 36 27 29 30 32 24 21 27 30 28 27 30 28 36