For example, if you have a two-sided alternative hypothesis, such as pA ≠ pB, you can use the z-test formula: z = (pA - pB) / sqrt (p * (1 - p) * (1 / nA + 1 / nB)) where pA and pB are the ...

In this tutorial, we will be testing a hypothesis using R. There are several hypothesis testing methods that you can immediately use once you have R installed on your computer. You can use these ...

Researchers investigated whether vaccination against human papillomavirus (HPV) increased the risk of miscarriage in young women.1 The results of two double blind, multicentre, phase three randomised ...

This contains compiled simulation functions in python for statistical analysis related to DSC381. Hypothesis test for a single mean hyptest_singlemean(data, null_hyp = 0, n = 10000, alt = 'two-sided') ...

Based on the duality between tests and confidence sets we introduce a new method to derive one-sided confidence bounds following the rejection of a null hypothesis with two-sided alternatives. This ...

Abstract Equivalence testing is growing in use in scientific research outside of its traditional role in the drug approval process. Largely due to its ease of use and recommendation from the United ...

The aim of this study is comparing group sequential tests in respect to advantage of sample size reduction and early termination. In this study, 4 test types used in group sequential designs were ...

Pocock (1977) has recently proposed group sequential methods for sequential analysis of clinical trials. However, these methods are intended to test a null hypothesis against a two-sided alternative, ...