Question

Byron works at a copy center. He made thousands of copies for three stores. He thinks he may have printed them on the wrong paper. He looks at the top 20 copies to see which type of paper he used.

(each sample used in a survey below is biased. Explain how to modify the sample to eliminate the bias.)

Answer 1

He should randomly select a larger sample size of copies from each store, not just the top 20. This would give him a more representative sample and reduce the chance of any bias in his understanding of the paper used. Additionally, he could check with the stores to confirm the type of paper that was ordered and used for the copies, to further verify his findings.

Answer 2

his sample size is too small, you can modify the sample by looking at the first like 500 from each store/

Explanation: