Questio The average tip left by adult Americans at the restaurant is 20 of the total bill A restaurant owner believes that the mean percentage tip has decreased lately The owner recorded the percentage tip left by 25 randomly selected customers who dined at the restaurant in a given week Assume that the percentage tips are normally distributed At the level of significance 0 10 test whether the mean percentage tip is lower than 20 Click here to open the data in StatCrunch Which set of Hypothesis Statement are correct A Ho p 20 HA p 20 A A B t stat round to 2 decimal places P value do not round A H 20 H 20 Decision Type Retain Ho or Reject Ho C H 20 HA 20 D H 25 H 25