Create a Confidence Interval for the Mean Difference A) 1753
B) 1

Multiple Choice

Create a confidence interval for the mean difference.
-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? $$\begin{array} { | l | c | c | c | c | c | c | c | c | c | c | c | c | c | c | c | c | } \hline \begin{array} { l } \text { Pre-workshop } \\\text { anxiety level }\end{array} & 7 & 6 & 9 & 5 & 6 & 7 & 5 & 7 & 6 & 4 & 3 & 2 & 1 & 3 & 4 & 2 \\\hline \begin{array} { l } \text { Post-workshop } \\\text { anxiety level }\end{array} & 4 & 3 & 7 & 3 & 4 & 5 & 4 & 6 & 5 & 3 & 2 & 2 & 1 & 3 & 4 & 3 \\\hline \begin{array} { l } \text { Difference } \\\text { (Post - Pre) }\end{array} & - 3 & - 3 & - 2 & - 2 & - 2 & - 2 & - 1 & - 1 & - 1 & - 1 & - 1 & 0 & 0 & 0 & 0 & 1 \\\hline\end{array}$$

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