Which of the following set of hypotheses is used to test if the mean of the first population is smaller than the mean of the second population, using matched-paired sampling?
A) H0: µ1 – µ2 ≤ 0, HA: µ1 – µ2 > 0
B) H0: µ1 – µ2 ≥ 0, HA: µ1 – µ2 < 0
C) H0: µD ≤ 0, HA: µD > 0
D) H0: µD ≥ 0, HA: µD <0