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Exercise for t-Tests (One Sample)

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Post  pallav on Fri Mar 30, 2012 5:52 pm

Physics Aptitude: Problem

Over 5000 students were tested on their abilities in Calculus and Physics for a study performed by the Third International Mathematics and Science Study. The testing was separated into four regions of the United States. Some students took the Calculus test, some took the Physics test, and some took both. Assume that the scores represent a random sample for each of the four regions of the U.S.

Test the claim made by Physics teachers that the overall mean U.S. score on the Physics test should be higher than 420. Use a significance level of α = 0.05.

Physics Aptitude: Sample Data ( Find attached excel file is a data for this problem)

The Scores data set contains the scores on a Calculus and a Physics test given to 1000 students in a particular region of the U.S.

Variable Detail:

Name Type Description
region num region of the U.S. the tests were administered in (categorical)
Calculus_Score num score on Calculus test
Physics_Score num score on Physics test

Download Data from attached file..

Please post your answers..........
Exercise for t-Tests (One Sample) Attachment
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