SOLUTION: In aa U.S. shchool distrct, a standrdized reading test is used to test the performance of fifth grade students in a school against the national norm for the fifth grade students. T
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Question 192622: In aa U.S. shchool distrct, a standrdized reading test is used to test the performance of fifth grade students in a school against the national norm for the fifth grade students. The number of fifth grade students in this elementary school taking the test is 55 students. The norm test score, the population mean, for this particular standardized test is 100 points. The population standard deviation for the year under study is 12. Is this a "Z" or "t" type test? Give your reason
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
In aa U.S. shchool distrct, a standrdized reading test is used to test the performance of fifth grade students in a school against the national norm for the fifth grade students. The number of fifth grade students in this elementary school taking the test is 55 students. The norm test score, the population mean, for this particular standardized test is 100 points. The population standard deviation for the year under study is 12. Is this a "Z" or "t" type test? Give your reason
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Some texts say it's a z test because n > 30 and you have sigma.
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Other texts say it's a t test because it is a test of means.
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Check your text.
Cheers,
Stan H.
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