What is a one sample t test? The t test is a commonly used hypothesis test in statistics that allows us to compare the mean value of a group of sampled data with some hypothesized value, usually a ...
A two-sample z-test for population means compares two population means. It is appropriate when the population standard deviations are known and the sample sizes are large. This web calculator conducts ...
The Annals of Statistics, Vol. 48, No. 3 (June 2020), pp. 1304-1328 (25 pages) We propose a two-sample test for high-dimensional means that requires neither distributional nor correlational ...
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