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More Lessons for SAT Math

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Algebra Tutorials

This video is for the redesigned SAT which is for you if you are taking the SAT in March 2016 and beyond.

**Surveys and Samples**

Example:

A research assistant randomly selected 75 undergraduate students from the list of all students enrolled in the psychology-degree program at a large university. She asked each of the 75 students, "How many minutes per day do you typically spend speed reading?" The mean reading time in the sample was 89 minutes, and the margin of error for this estimate was 4.28 minutes. Another research assistant intends to replicate the survey and will attempt to get a smaller margin of error. Which of the following samples will most likely result in a smaller margin of error for te estimated mean time students in the psychology-degree program read per day?
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More Lessons for Problem Solving and Data Analysis

More Lessons for SAT Math

More Resources for SAT

Algebra Tutorials

This video is for the redesigned SAT which is for you if you are taking the SAT in March 2016 and beyond.

Example:

A research assistant randomly selected 75 undergraduate students from the list of all students enrolled in the psychology-degree program at a large university. She asked each of the 75 students, "How many minutes per day do you typically spend speed reading?" The mean reading time in the sample was 89 minutes, and the margin of error for this estimate was 4.28 minutes. Another research assistant intends to replicate the survey and will attempt to get a smaller margin of error. Which of the following samples will most likely result in a smaller margin of error for te estimated mean time students in the psychology-degree program read per day?

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