MathLab with Mr. Ahmed

MathLab with Mr. Ahmed is a math learning website by Ahmed Amasha, a mathematics teacher teaching the American curriculum. Explore Algebra 2, Precalculus, Calculus, and SAT and PSAT Math Prep through lessons, focused practice and printable resources.

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Inference from sample data

Question 1 of 3

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A simple random sample of 120120 members of one library is surveyed, and 64%64\% prefer digital books. For which population is this sample designed to provide a representative estimate?
Worked example
A simple random sample supports an estimate for the population it was drawn from. It does not by itself justify extending that estimate to people outside that population.
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A simple random sample of 220220 members of one library is surveyed, and 52%52\% prefer digital books. For which population is this sample designed to provide a representative estimate?