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.
Reject the null hypothesis that the two means are equal if. where. 1-Î±/2,Î½ is the critical value of the t distribution with Î½ degrees of freedom where. If equal variances are assumed, then Î½ = N 1 + N 2 - 2. Two-Sample t-Test Example. The following two-sample t-test was generated for the AUTO83B.DAT data set.urpose: Test if two population means are equal. The two-sample t-test (Snedecor and Cochran, 1989) is used to determine if two population means are equal. A common application is to test if a new process or treatment is superior to a current process or treatment. There are several variations on this test.