Using a two-tailed t-test, you generate an estimate of the difference between the two classes and a confidence interval around that estimate. From the t-test you find the difference in average score between class 1 and class 2 is 4.61, with a 95% confidence interval of 3.87 to 5.35. Find the critical values for a confidence interval when the data is approximately normally distributed.

Latin-script letters ) kēratēd̦; A a, Ā ā, Ä ä, Ǟ ǟ, B b, D d, D̦ d̦, E e, Ē ē, F f, G g, H h, I i, Ī ī, J j, K k, L l, Ļ ļ, M m, N n, Ņ ņ, O o, Ō ō, Ȯ ȯ, Ȱ ȱ, Õ õ, Ȭ ȭ, P p, R r, Ŗ ŗ, S s, Š š, T t, Ț ț, U u, Ū ū, V v, Z z, Ž ž Latin small letter t with hook and retroflex hook is a symbol for a voiceless retroflex implosive [8] [9] Latin script ): A a B b C c D d E e F f G g H h I i J j K k L l M m N n O o P p Q q R r S ſ s T t U u V v W w X x Y y Z z This finding, like the finding from the confidence interval, suggests that you are not likely to find a difference this large if the true difference in average test scores is zero. Other interesting articles

Statistical tests generate a test statistic showing how far from the null hypothesis of the statistical test your data is. They then calculate a p-value that describes the likelihood of your data occurring if the null hypothesis were true.

The test statistic for t-tests and regression tests is the t-score. While most statistical programs will automatically calculate the corresponding p-value for the t-score, you can also look up the values in a t-table, using your degrees of freedom and t-score to find the p-value. Constable, Peter (2003-09-30). "L2/03-174R2: Proposal to Encode Phonetic Symbols with Middle Tilde in the UCS" (PDF). Turned capital T and turned small t were used in transcriptions of the Dakota language in publications of the American Board of Ethnology in the late 19th century [14]

t in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887) The ordinal number twentieth, derived from this letter of the English alphabet, called tee and written in the Latin script. The t-distribution is a way of describing a set of observations where most observations fall close to the mean, and the rest of the observations make up the tails on either side. It is a type of normal distribution used for smaller sample sizes, where the variance in the data is unknown.