SAT, 15.12.2020 23:00 Anabel818

During a five day period, Laurel served a different number of customers at her saloon each day. The mean number of daily customers served during this period was 20. In the following month, during the same five-day period, she served 15 customers for four of the days, but in the fifth day she served 60 customers. What is the difference between the means of number of customers she served during the two five-day periods?

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During a five day period, Laurel served a different number of customers at her saloon each day. The...