Let the population x obey the normal distribution x ~ n (μ, σ ^ 2), and x1, X2,..., xn be a sample from the population, Let u = [√ n (x - μ)] / σ, then d (U)=（

Let the population x obey the normal distribution x ~ n (μ, σ ^ 2), and x1, X2,..., xn be a sample from the population, Let u = [√ n (x - μ)] / σ, then d (U)=（

U = n ^ (1 / 2) * (x ˉ - μ) / σ obeys the standard normal distribution
U N(0,1),
Therefore, D (U) = 1

Elden Ring Premiere

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