Psyllium is a form of fiber made from the Plantago ovata plant, specifically from the husks of the plantâs seed.It sometimes goes by the name ispaghula. Itâs most commonly known as a laxative. Psyllium provides more benefits to your body than decreasing the amount of time you spend in the bathroom.syllium is a form of fiber made from the Plantago ovata plant, specifically from the husks of the plantâs seed.
Independent Samples t Test. The Independent Samples t Test compares the means of two independent groups in order to determine whether there is statistical evidence that the associated population means are significantly different. The Independent Samples t Test is a parametric test.he calculated t value is then compared to the critical t value from the t distribution table with degrees of freedom df = n 1 + n 2 - 2 and chosen confidence level. If the calculated t t value, then we reject the null hypothesis. Note that this form of the independent samples T test statistic assumes equal variances.
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.