Free SAT Practice Question

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ID: SAT-MATH-PSDA-028
Section: SAT Math - Problem Solving & Data Analysis (PS&DA)
Topic: Inference from sample statistics and margin of error
Difficulty level: Hard

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A market researcher selected a random sample of \(250\) subscribers to an online magazine and recorded how many of the magazine's articles each subscriber had read in the past week. The sample mean was \(6.4\) articles, with an associated margin of error of \(0.5\) at a given confidence level. Which of the following is the most appropriate conclusion?

AEvery subscriber to the magazine read between \(5.9\) and \(6.9\) of the magazine's articles in the past week.

BThe mean number of the magazine's articles read in the past week by all subscribers to the magazine is exactly \(6.4\).

CIt is plausible that the mean number of the magazine's articles read in the past week by all subscribers to the magazine is between \(5.9\) and \(6.9\).

DIt is plausible that the mean number of online-magazine articles read in the past week by all adults who read online magazines is between \(5.9\) and \(6.9\).

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