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The general manager of the grocery store Wegmans in Canandaigua, NY, wants to know the average (typical) amount of time it takes for a customer to...
1. The general manager of the grocery store Wegmans in Canandaigua, NY, wants to know the average (typical) amount of time it takes for a customer to check out of his grocery store. Last Saturday between the hours of 8 am and noon the manager, along with a team of helpers, measured the amount of time it took the first 200 customers to check out at each of its open registers. The helpers recorded the time (in minutes) using a stop watch, starting when a customer first arrived at a line and ending when they had paid and received their receipt. The average time for the sample was 6.5 minutes.
