Phosphorus and Potassium. Use technology to solve Exercises 45–47.
nutrition
47. Create a new variable in Excel or Minitab, phos_pot, which equals the amount of phosphorus minus the amount of potassium in each food item. Use a paired sample hypothesis test to test, at level of significance , whether the population mean difference differs from 0.
10.1.47
vs. . Reject if the . . . Since the is ≤ 0.05, we reject . There is evidence at the level of significance that the population mean difference is not equal to 0.