tint(x,Coverage), x a REAL vector or matrix, 0 < Coverage < 1 a REAL scalar |

tint(x,Coverage) computes a (two sided) t confidence interval with coverage rate Coverage for the population mean of the data in REAL vector x. The result is vector(lowerLimit, upperLimit). Coverage must be a REAL scalar between 0 and 1. When x is a matrix with M columns, tint(x, Coverage) returns a 2 by M matrix, with lower and upper limits in rows 1 and 2, respectively. When there are missing values, an informative message is printed. Example: Cmd> alpha <- .05; tint(x,1-alpha) # computes 95% conf. interval. See also tval(), t2val(), and t2int().

Gary Oehlert 2003-01-15