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.
Two independent samples t-test. An independent samples t-test is used when you want to compare the means of a normally distributed interval dependent variable for two independent groups. For example, using the hsb2 data file, say we wish to test whether the mean for write is the same for males and females.