Question: According to the data collected by CU mobile, monthly data usage of each of their customers follows a normal distribution with a standard deviation of

According to the data collected by CU mobile, monthly data usage of each of their customers follows a normal distribution with a standard deviation of 0.81 GB. If we select 6 customers, what is the probability that their average monthly data usage exceeds the population mean by more than 0.5 GB?

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