local mcburger restaurant mean wait time customer 26 minutes standard deviation

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March 23, 2021
eng 19th century camera was revolutionary invention
March 23, 2021

local mcburger restaurant mean wait time customer 26 minutes standard deviation

At the local McBurger restaurant, the mean wait time for a customer is 2.6 minutes with a standard deviation of 2.1. Of the 400 customers expected today, how many should expect to wait more than 4.7 minutes for their order?
 
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