检验形式

R语言函数

正态总体均值的假设检验

单个总体

双边检验

t. test ( x, y = NULL,

alternative = c("1ess"greater"),

mu = 0, paired = FALSE, var.equal = FALSE,

conf.level = 0.95,…)

单边检验

t. test ( x, y = NULL,

alternative = “two.sided”,

mu = 0, paired = FALSE, var.equal = FALSE,

conf.level = 0.95,…)