A population has mean 18 and standard deviation 6. Round the answers to two decimal places as needed. What number has a z-score of -2.8? has a z-score of -2.8. .
Added by Ronald C.
Step 1
Step 1: Use the z-score formula: z = (X - μ) / σ, where μ is the mean and σ is the standard deviation. Show more…
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