George is curious. He has been told that the average body temperature of humans is 98.6 degrees Fahrenheit.However, he believes it is much lower than that. He randomly selects 60 people from those passing by him on a street and takes their temperature. The average temperature of these 60 people is 98.2 degrees Fahrenheit. The standarddeviation,sigma Subscript xx,is known to be 0.62 degrees Fahrenheit. Which of the following is the correct nullhypothesis?

A.Upper H 0H0: x overbarxequals=98.2degreesFB.Upper H 0H0: x overbarxequals=98.6degreesFC.Upper H 0H0: mu Subscript xxequals=98.2degreesFD.Upper H 0H0: mu Subscript xxless than<98.6degreesFE.Upper H 0H0: mu Subscript xxequals=98.6degreesF