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All of the following statements are true about paired sample t-test EXCEPT? a) They can be used when the sample means are unknown b) They
All of the following statements are true about paired sample t-test EXCEPT?
a) They can be used when the sample means are unknown
b) They involve hypothesis-testing procedures
c) They can be used when the population variance is unknown
d) They compare the calculated t-scores from a sample to a t-distribution
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