The algebra test had a mean of 82 and a standard deviation of 8. What percentage of scores fall above a score of 90.
Added by Shannon B.
Step 1
First, we need to find the z-score for a score of 90. The z-score is calculated as: z = (X - μ) / σ where X is the score, μ is the mean, and σ is the standard deviation. Show more…
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