In which one of the following situations is the application of...

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In which one of the following situations is the application of t-test is most appropriate?

A. Testing the significance of coefficient of correlation between paired observations of small sized sample

B. Testing the significance of coefficient of correlation between paired observations of large sized sample

C. Comparing variances of two small sized samples

D. Testing the significance of the difference among mean values of more than two samples groups

Answer: Option A

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