Math Problem Statement
The average salary for graduates entering the engineering field is $40,000. If the salaries are normally distributed with a standard deviation of $5000, find the probability that. b) A group of nine graduates will have a group average over $45,000.
Solution
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Math Problem Analysis
Mathematical Concepts
Normal Distribution
Sampling Distribution
Z-score
Formulas
Standard Error of the Mean (SEM)
Z-score formula
Theorems
Central Limit Theorem
Suitable Grade Level
College Level
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