A Mid-Sized Company Has Decided to Implement an Enterprise Resource $d =$

A mid-sized company has decided to implement an enterprise resource planning (ERP) system, and management suspects that many of its employees are concerned about the planned implementation. Managers are considering holding informational workshops to help decrease anxiety levels among employees. They randomly select 16 employees to participate in a pilot workshop. These employees were given a questionnaire to measure anxiety levels about ERP before and after participating in the workshop.
If we let $d =$ post-workshop anxiety level-pre-workshop anxiety level, the correct alternative hypothesis to determine if this approach was successful is

A) $\mu _ { d } = 0$
B) $\mu _ { d } < 0$
C) $\mu _ { d } > 0$
D) $\mu _ { d } \neq 0$
E) $\mu _ { d } \leq 0$

Correct Answer:

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