The t-tests are extensively used in statistics to test for population means. Typically, they are used instead of the corresponding z-tests when the the population standard deviations are not known.
Mathcracker.com provides t-test for one and two samples, and for independent and paired samples. Also, you will be able to find calculators of critical value as a well as calculator of probabilities and graphing regions of the t-distribution.
In this page you will all the T-tests we have available. Check the list below:
T-test for One Population Mean
T-test for Paired Samples
T-test for two Means – Unknown Population Standard Deviations
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T-test for Paired Samples
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Normal Probability Calculator
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