Module 5 Equations/Tests



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T-Test Continued

X1 = mean of the first sample

X2 = mean of the second sample

s1 = standard deviation of the first sample

s2 = standard deviation of the second sample

N1 = number of measurements in the first sample

N2 = number of measurements in the second sample

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Hypothesis (Null)

Null = no significant difference

(Ha) = significant difference

If t exceeds significant (critical value) then we reject the null hypothesis

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