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