Write Hypotheses for the Paired T-Test $\mu _ { d } = 0$

Short Answer

Write hypotheses for the paired t-test.
-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. $\mu _ { d } \leq 0$