Professional dancer, choreographer, educator and AmSAT (American Society for Alexander Technique) certified teacher, KC Chun-Manning explains âThe Alexander Technique (AT) has affected EVERY aspect of my life and how I live in my body, allowing for increased skill, clarity, integration and better choice-making.
The two-sample t-test is a hypothesis test for answering questions about the mean where the data are collected from two random samples of independent observations, each from an underlying normal distribution: The steps of conducting a two-sample t-test are quite similar to those of the one-sample test. And for the sake of consistency, we will focus on another example dealing with birthweight and prenatal care.
Hypothesis Testing. 1  Standardized test statistic = (Statistic-Parameter) / (Standard deviation of statistic). 2  One-sample z-test for proportions: z-score = z = (p-P0) / sqrt(p * q / n). 3  Two-sample z-test for proportions: z-score = z = z = [ (p1 - p2) - d ] / SE. 4  One-sample t-test for means: t-score = t = (x - Î¼) / SE.