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.
Calculate an appropriate test statistic. Note that structure of this formula is similar to the formula for the test statistics for one proportion. It is the difference between the sample statistic and hypothesized population parameter divided by the standard error. 3. Determine a p-value associated with the test statistic. When testing hypotheses about a mean or mean difference, a t distribution is used to find the p-value. t distributions are indexed by a quantity called degrees of freedom, calculated as df = n â 1 for the situation involving a test of one mean or test of mean difference. Using the t table, most likely you wonât find the exact value but instead the number will fall between two.