Mathematics, 04.06.2021 02:10, abell23000

A factory that manufactures screws is performing a quality control experiment. Each object should have a length of no more than centimeters. The factory believes that the length of the screws exceeds this value and measures the length of screws. The sample mean screw length was centimeters. The population standard deviation is known to be centimeters. 1. What is the null hypothesis?
2. What is the alternative hypothesis?

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A factory that manufactures screws is performing a quality control experiment. Each object should ha...