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eduard
3 years ago
8

A recent study of the hourly wages of maintenance crew members for major airlines showed that the mean hourly salary was $20.50,

with a standard deviation of $3.50. assume the distribution of hourly wages follows the normal probability distribution. we select a crew member at random. what is the probability the crew member earns
Mathematics
1 answer:
RSB [31]3 years ago
8 0
You ended without giving the values, so we can't get the exact answer. However, I can tell you steps.

First, you need to find the z-score. Then, look up the z-score on a normal distribution table and you will get the percent.

Let's call your value X. Just plug X into the equation below and you will have your z-score.

(x - 20.5) / 3.5 = z

Now, look up the z-score and you will have your probability.<span />
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