Jennifer Cantu, VP of Customer Services at Tri-State Auto Insurance, Inc., monitors the claims processing time of the claims division. Her standard includes "a mean processing time of 5 days or less."...

Jennifer Cantu, VP of Customer Services at Tri-State Auto Insurance, Inc., monitors the claims processing time of the claims division.  Her standard includes "a mean processing time of 5 days or less."  Each week, her staff checks for compliance by analyzing a random sample of 60 claims.  Jennifer's null hypothesis is ________.