Math Problem Statement
Step 2 of 5 :
Find the value of the standard deviation of the paired differences. Round your answer to one decimal place.
Solution
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Math Problem Analysis
Mathematical Concepts
Statistics
Paired Sample T-Test
Standard Deviation
Formulas
Difference = Score(new design) - Score(old design)
Sample mean: Mean difference = (sum of differences) / n
Sample standard deviation: s = sqrt[ (Σ(d_i - mean_difference)^2) / (n - 1) ]
Theorems
Central Limit Theorem
Normal Distribution Assumption
Suitable Grade Level
College Level / Advanced High School
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