public static zTest ( number $Hₐ, integer $n, number $H₀, number $σ ) : array | ||
$Hₐ | number | Alternate hypothesis (M Sample mean) |
$n | integer | Sample size |
$H₀ | number | Null hypothesis (μ Population mean) |
$σ | number | SD of population (Standard error of the mean) |
return | array | [ z => z score p1 => one-tailed p value (left or right tail depends on how Hₐ differs from H₀) p2 => two-tailed p value ] |