Two large containers, X and Y, contain many colored beads. From a random sample of beads
taken from container X, the proportion of blue beads in the sample was recorded as P x = 0.35.
From a random sample of beads taken from container Y, the proportion of blue beads in the
sample was recorded as Py = 0.39. Assuming all conditions for inference are met, which of the
following procedures is the most appropriate for estimating the difference between the
proportions of all blue beads in the containers?