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

Multiple Choice

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.At the 90% confidence level, what is the margin of error for the mean difference in anxiety levels pre- and post-workshop?

$\begin{array}{|l|r|r|r|r|r|r|r|r|r|r|r|r|r|r|r|r|}\hline \text { Pre-workshop anxiety level } & 7 & 6 & 9 & 5 & 6 & 7 & 5 & 7 & 6 & 4 & 3 & 2 & 1 & 3 & 4 & 2 \\\hline \text { Post-workshop anxiety level } & 4 & 3 & 7 & 3 & 4 & 5 & 4 & 6 & 5 & 3 & 2 & 2 & 1 & 3 & 4 & 3 \\\hline \text { Difference (Post - Pre) } & -3 & -3 & -2 & -2 & -2 & -2 & -1 & -1 & -1 & -1 & -1 & 0 & 0 & 0 & 0 & 1 \\\hline\end{array}$

A) $1.753$
B) $1.147$
C) $0.287$
D) $0.503$
E) $2.010$