How can a t test be employed in hypothesis testing

Reference no: EM13241669

The mean on this test is 3.5 with a standard deviation of .5. Billy scores 5. What is the standard score?

If I have unnormal data with n=15, and there are 2 samples. What test do I use? How do I make the data normal if the samples contain zero, b/c it's measuring time?

How can a t test be employed in hypothesis testing by the use of directional vs. nondirectional hypotheses?

When is using the t statistic a more appropriate alternative to using a z-score?

Reference no: EM13241669

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