Scores on a test have a mean of 65 and a standard deviation of 11. Tony has a score of 83. Convert Tony's score to a z-score, rounded to the nearest hundredth.
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Step 1: The formula for calculating a z-score is: $$z = \frac{x - \mu}{\sigma}$$ where: * $x$ is the raw score * $\mu$ is the mean * $\sigma$ is the standard deviation Show more…
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