Math Problem Statement
设总体“的分布律为P(X=x)=(1-p)x-1*p,x=12,3... (0<p<1为未知参数),X1,X2,…Xn为总体X的样本,若求p的最大似然估计,则似然函数为()
Solution
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Math Problem Analysis
Mathematical Concepts
Maximum Likelihood Estimation
Probability Distributions
Exponential Family
Formulas
P(X = x) = (1-p)^{x-1} p
L(p) = p^n (1-p)^{∑(x_i-1)}
ℓ(p) = n ln(p) + (∑(x_i-1)) ln(1-p)
∂ℓ(p)/∂p = n/p - (∑(x_i-1))/(1-p) = 0
p̂ = n / (n + ∑(x_i - 1)) = n / ∑(x_i)
Theorems
Maximum Likelihood Estimation (MLE)
Suitable Grade Level
College/University Level
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