A teacher has two large containers filled with blue, red, and green beads. She wants her students to estimate the difference in the proportion of red beads in each container. What type of sampling is described in this study?

The teacher is comparing the proportion of red beads in one container with the proportion in the other container. Since the beads come from two separate containers, the study uses two samples. This is not paired data because individual beads in one container are not naturally matched with beads in the other.

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