Mathematics, 27.05.2020 23:08 yeahmaneee
The population mean wait time to check out of a supermarket has been 10.73 minutes. Recently in an effort to improve the waiting time, the supermarket has experimented with a system in which there is a single waiting line with multiple checkout servers. A sample of 25 customers was selected, and their mean wait time to check out was 12.1 minutes. Assume a population standard deviation of 5.8 minutes. At the 0.05 level of significance, is there evidence that the population mean wait time to check out is more than 10.73 minutes?
Answers: 3
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