Given X∼N(μ,σ2)X \sim N(\mu, \sigma^2)X∼N(μ,σ2), what is the z-score transformation ZZZ of a value xxx?
Z=x−μσZ = \frac{x-\mu}{\sigma}Z=σx−μ
Z=x+μσZ = \frac{x+\mu}{\sigma}Z=σx+μ
Z=μ−xσZ = \frac{\mu-x}{\sigma}Z=σμ−x
Z=x−μσ2Z = \frac{x-\mu}{\sigma^2}Z=σ2x−μ