The owner of a restaurant has recently hired a new manager who claims to have improved the workflow. the owner wants to know if indeed, the new workflow is more effective. he has some past data on customer waiting time during peak demand hours. he plans to collect the new data to test this. what kind of a test will he do if he wants to compare the new wait time with the old data in this way?
-If he takes the same number of observations, he can do a paired t-test
-This is a paired t-test because we are checking before and after
-This will be t-test unequal variances because now he has a new manager
-This is a test about sample proportions
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