Consider the following dependent random samples
Observations 1 2 3 4 5 6
x-values 8.1 7.6 8.3 8.4 7.9 7.0
y-values 8.4 8.4 8.5 8.9 8.1 7.6
a) Determine the difference between each set of points, xi - yi
b) Do hypothesis testing to see if µd < 0 at the α = .025.