Math Problem Statement

if a sample has 20 observations and a 95% confidence est for a pop is needed. tell me the t- multiple

Solution

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Math Problem Analysis

Mathematical Concepts

Statistics
Confidence Interval
Student's t-distribution

Formulas

Degrees of freedom: df = n - 1
Critical value from the t-distribution table: t_{α/2, df}
t-multiple for confidence interval

Theorems

Student's t-distribution

Suitable Grade Level

College-Level Statistics