Math Problem Statement
Kekuatan traktor untuk menarik tersebar secara normal dengan nilai tengah µ = 50 kg per unit dan simpangan baku (σ) = 10 kg per unit. Jika diambil contoh acak, berapakah peluang kekuatan traktor untuk menarik : a. antara 45 unit dan 55 unit b. kurang dari 40 unit
Solution
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Math Problem Analysis
Mathematical Concepts
Probability
Normal Distribution
Z-score
Formulas
Z = (X - µ) / σ
P(a < X < b) = P(Z_a < Z < Z_b)
Theorems
Empirical Rule
Standard Normal Distribution
Suitable Grade Level
Grades 10-12
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