Math Problem Statement
ある都市におけるA 新間の読者の比率は20%であるという。この都市の任意に抽出した50人について,その中に含まれるA新間の購読者数をXとする。Xの平均と標準偏差を求めよ。
Solution
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Math Problem Analysis
Mathematical Concepts
Probability
Binomial Distribution
Statistics
Formulas
E(X) = n * p (mean of binomial distribution)
σ(X) = √(n * p * (1 - p)) (standard deviation of binomial distribution)
Theorems
Binomial Distribution Theorem
Suitable Grade Level
High School - Advanced
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