A small hair salon in Denver, Colorado, averages about 50 cu…
A small hair salon in Denver, Colorado, averages about 50 customers on weekdays with a standard deviation of 8. It is safe to assume that the underlying distribution is normal. In an attempt to increase the number of weekday customers, the manager offers a $2 discount on 5 consecutive weekdays. She reports that her strategy has worked because the sample mean of customers during this 5-weekday period jumps to 57. What is the probability to get a sample average of 57 or more customers if the manager had not offered the discount?