Patients with chronic obstruction pulmonary disease (COPD) volunteered to be tested for exhaled nitric oxide (eNO) while resting and after a 6-minute walk test. Each subject was measured under each condition, and the order of presentation (resting then walking or the other way around) was randomized. Researchers believe the eNO should be higher while walking than resting for COPD patients. The data are summarized in the table below. Assume each of the distributions of eNOwhile walking, while resting, and the differencesis not heavily skewed. Write the null and alternative hypotheses in proper notation. H subscript 0 space colon space mu subscript Walking space minus mu subscript Resting = 0 versus H subscript A space colon space mu subscript Walking space minus mu subscript Resting space space space end subscript greater than 0 H subscript 0 space colon space mu subscript d = 0 versus H subscript A space colon space mu subscript d space less than0 where d is the difference Walking - Resting H subscript 0 space colon space straight pi subscript Walking space minus straight pi subscript Resting = 0 versus H subscript A space colon space straight pi subscript Walking space minus straight pi subscript Resting space space space end subscript greater than 0 H subscript 0 space colon space mu subscript d = 0 versus H subscript A space colon space mu subscript d space greater than0 where d is the difference Walking - Resting