Study the following table of population in a district and the average population served per doctor. Calculate the harmonic mean:rn rnrnrnrnAREArnrnrnPOPULATION SERVED PER DOCTORrnrnrnPOPULATIONrnrnrnNUMBER OF DOCTORSrnrnrnrnrnRURALrnrnrn1000rnrnrn50000rnrnrn50rnrnrnrnrnURBANrnrnrn500rnrnrn50000rnrnrn100rnrnrnrnrnTOTALrnrn rnrn100000rnrnrn150rnrnrnrn