the critical value for the t-test for n=28,x=0.01, two-tailed test is
To find the critical value for the t-test, we need to use a table or a statistical calculator. The critical value depends on the significance level (alpha), the degrees of freedom (df), and the type of t-test (one-tailed or two-tailed).
In this case, you mentioned a two-tailed test with n = 28 and x = 0.01. However, the significance level (alpha) is missing.
The degrees of freedom (df) for a two-sample t-test is given by (n1 + n2 - 2) where n1 and n2 are the sample sizes of the two samples being compared.
Once you know the value of alpha, you can find the critical value by referring to the t-distribution table or using a statistical calculator.
For example, if alpha = 0.05 (the most commonly used significance level), and the degrees of freedom (df) is 26 (for n = 28), you would look up the critical value for alpha/2 = 0.025 and df = 26 in the t-distribution table. This would give you the critical value for the two-tailed t-test.
Please provide the significance level (alpha) to obtain the specific critical value.