Annual salaries for a large company are approximately normally distributed with a mean of $75,000 and a standard deviation of $30,000. What percentage of company workers make under $55,000?
Added by Tiffany M.
Step 1
First, we need to find the z-score for $55,000. The z-score is calculated as: z = (X - μ) / σ where X is the value we want to find the z-score for, μ is the mean, and σ is the standard deviation. Show more…
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