Fill in the blank below. A researcher wants to show the mean from population 1 is less than the mean from population 2 in matched-pairs data. If the observations from sample 1 are Xi and the observations from sample 2 are Yi, and di=XiYi, then the null hypothesis is H0: d=0 and the alternative hypothesis is H1: d ___ 0. Question content area bottom Part 1 A researcher wants to show the mean from population 1 is less than the mean from population 2 in matched-pairs data. If the observations from sample 1 are Xi and the observations from sample 2 are Yi, and di=XiYi, then the null hypothesis is H0: d=0 and the alternative hypothesis is H1: d not equals less than or equals less than< greater than> greater than or equals 0..