Rarely, proton pump inhibitors (such as omeprazole) have caused vitamin B-12 deficiency. The risk is increased if they are taken every day for a long time (3 years or longer). Tell your doctor right away if you develop symptoms of vitamin B-12 deficiency (such as unusual weakness, sore tongue, or numbness/tingling of the hands/feet).
Stability reliability refers to the consistency of students' scores when a test is administered to the same students on two different occasions. Alternate-form reliability describes the consistency of students' performances on two different (hopefully equivalent) versions of the same test.
1 The degrees of freedom (DF) is equal to the sample size (n) minus one. 2  Thus, DF = n - 1. 3  Test statistic. 4  The test statistic is a t-score (t) defined by the following equation. 5  where x is the sample mean, Î¼ is the hypothesized population mean in the null hypothesis, and SE is the standard error.he observed sample mean produced a t-score test statistic of -0.894. We use the t Distribution Calculator to find P(t. Interpret results. Since the P-value (0.19) is greater than the significance level (0.01), we cannot reject the null hypothesis.