In which of the following scenarios would it be appropriate to use a one-sample z-test?

Group of answer choices

Testing whetherthe meanpatient satisfaction score is higher at Hospital A versus Hospital B.

Testing whether the mean patient satisfaction score at Hospital A differs from the overall national mean satisfaction score for hospital patients.

Testing whether the mean patient satisfaction score of Hospital A during January is significantly different from the mean patient satisfaction score of Hospital A in February.

Testing how much the mean patient satisfaction score at Hospital A improved last year versus this year.