t Table cum. prob t .50 t .75 t .80 t .85 t .90 t .95 t .975 t .99 t .995 t .999 t .9995 one-tail. 0.50. 0.25. 0.20. 0.15. 0.10. 0.05. 0.025. 0.01. 0.005. |
Critical Values for Student's t-Distribution. Upper Tail Probability: Pr(T >t) df. 0.2. 0.1. 0.05. 0.04. 0.03. 0.025. 0.02. 0.01. 0.005. 0.0005. 1. 1.376. 3.078. |
Example. The mean of a sample is 128.5, SEM 6.2, sample size 32. What is the 99% confidence interval of the mean? |
The table entries are the critical values (percentiles) for the $t$ distribution. The column headed DF (degrees of freedom) gives the degrees of freedom for ... |
Find in this t table (same as t distribution table, t score table, Student's t table) t critical value by confidence level & DF for the Student's t distribution ... |
t-distribution. Confidence Level. 60%. 70%. 80%. 85%. 90%. 95%. 98%. 99%. 99.8% 99.9%. Level of Significance. 2 Tailed. 0.40. 0.30. 0.20. 0.15. 0.10. 0.05. 0.02. |
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