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Lisa is an artist who makes jewelry from glass beads. She samples each container of beads she receives from the manufacturer to make sure the bead size is consistent with what she ordered.

Which of the following is the most important for Lisa to include in her sampling in order to ensure that the sample is representative of all of the beads in the container?

A

Lisa should be sure to sample less than $10\%$ of all the beads in the container.

B

Lisa should choose a sample of at least $30\text{ beads}$.

C

Lisa should sample the beads at the top of the bag because they are easiest to reach.

D

Lisa should thoroughly mix the beads in the container and randomly choose the beads for her sample.

E

Lisa should select as large of a sample as possible.

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