Question: Customers arrive at a single self serve coffee machine in a busy mall at the rate of 20 per hout, following Poisson distribution. Each customer

Customers arrive at a single self serve coffee machine in a busy mall at the rate of 20 per hout, following Poisson distribution. Each customer takes exactly 90 seconds to get his or her coffee. What is the expected number of customers in queue at this coffee machine? Multiple Choice 30 o 15 C 05 20 002 The least squares method refers to Multiple Choice selecting participants for the Delphi Technique. time series decomposition into smaller and smaller units. calculating the running sum of forecast errors. a computation in linear regression determining the smallest sources of error in a forecast

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