Question: Exercise 12.1: Suppose a processing plant will close down a production line for maintenance if the average length of time a robot welder takes to

Exercise 12.1: Suppose a processing plant will close down a production

Exercise 12.1: Suppose a processing plant will close down a production line for maintenance if the average length of time a robot welder takes to complete the weld is not 1.919 minutes. You want to test whether the production line should be closed for maintenance. a. What is the appropriate null hypothesis? b._What is the appropriate alternative hypothesis

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