A study of the nutrition of dialysis patients measured the level of phosphorus in the blood of a patient on 31 occasions.The mean phosphorus level for this patient was 5.2 mg/dL and a population standard deviation for all dialysis patients of 1.0 mg/dL.Is there evidence that this patient's true mean phosphorus level significantly exceeds 4.8 mg/dL, the upper end of the "normal" range?

1. (6 points)For the story above, (a) state the hypotheses, (b) calculate the test statistic and p-value, and (c) state your conclusion in terms of the story.