The formula for the z-score is:
\[ z = \frac{(X - \mu)}{\sigma} \]
where \( X \) is the score, \( \mu \) is the mean, and \( \sigma \) is the standard deviation.
For Test A:
\[ X = 130, \, \mu = 100, \, \sigma = 17 \]
\[ z = \frac{(130 - 100)}{17} =
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