Consider the following dependent random samples Observations 1 2 3 4 5 6 x-values 8.0 y-values 8.

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.