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Home Q & A Board Science-Related Homework Help Mathematics
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Hog95 Hog95
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10 years ago
The main difference between a Z score and a t score is that 
A)   T scores are used when a study is analyzed with a one-tailed test. 
B)   T scores are used when the population variance is unknown. 
C)   T scores are used only when the sample size is greater than 30. 
D)   T scores are used only when inferences are made about other samples. 
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padrepadre
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10 years ago
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Hog95 Author
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#2
10 years ago
Thank you so much for the reply. Your answer makes a lot of sense.
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