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In the theory of statistics & probability, the below formulas are the mathematical representation to estimate the t-statistic for the test of significance for sample mean with unknown population variance, difference between two sample means with equal but unknown population variance & related samples with unknown population variance. Users may refer these below formulas to know what are all the parameters are being used in the test of hypothesis for small samples. Users may use this one or two tailed t-test calculator to verify the estimation along with the complete work for test of significance using t-distribution table.
t-test formula for test of hypothesis for sample mean
t-test formula for test of hypothesis for difference between two sample means
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