Vail Resorts pays part-time seasonal employees at ski resorts on an hourly basis. At a certain mountain, the hourly rates have a normal distribution with standard deviation of $3.00. If 20% of all part-time seaonal employees make more than $13.16 an hour, what is the average hourly pay rate at this mountain?
sigma = 3, x = 13.16
p = 20% = 0.20 is the area under the standard normal ...
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