Math Problem Statement
You intend to estimate a population mean with a confidence interval. You believe the population to have a normal distribution. Your sample size is 19.
While it is an uncommon confidence level, find the critical value that corresponds to a confidence level of 89.1%.
Solution
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Math Problem Analysis
Mathematical Concepts
Statistics
Confidence Intervals
t-Distribution
Formulas
Critical value calculation using t-distribution
Confidence level adjustment formula (1 - confidence level) / 2
Theorems
Central Limit Theorem
Student's t-distribution theorem
Suitable Grade Level
College-level Statistics
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