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You are a Human Resources Manager of an expanding technology company consisting of 170 employees that develops and distributes small electronic devices. Over the past two (2) years, a research group formed, designed, and built prototypes of small remote surveillance…

Null and Alternative Hypotheses Many law enforcement agencies use voice-stress analysis to help determine whether persons under interrogation are lying. If the sound frequency of a person’s voice changes when asked a question, the presumption is that the person is…