Question 7 2 points Save Answ The waiting time for customers at the Burger Restaurant follows a normal distribution with

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Question 7 2 Points Save Answ The Waiting Time For Customers At The Burger Restaurant Follows A Normal Distribution With 1 (16.59 KiB) Viewed 110 times

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Question 7 2 points Save Answ The waiting time for customers at the Burger Restaurant follows a normal distribution with a population mean of 3 minutes and a standard deviation of 1 minute. The supervisor believes that he succeeded to make a decrease in the waiting time. So, he selected a 50-customer sample and found that the mean waiting time was 2.75 minutes. To test if he can conclude that the mean waiting time is less than 3 minutes, then: The computed Z value will equal: 0 -1.77 O 2.5 0 -2.55 O 1.77