Question

1. 12)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. To determine whether such an approach would be effective, 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. To determine if anxiety levels about ERP decreases as a result of the workshop, they should use a

A) two-sidedtestoftwoindependentmeans.

B) one-sidedpairedt-test.

C) two-sidedpairedt-test.

4. one-sidedtestoftwoindependentmeans.
5. one-sidedtestoftwoproportions.

2. 13)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. The mean of the difference between post-workshop and pre-workshop is -1.125, with a standard deviation of 1.1475. At the 90% confidence level, what is the margin of error for the mean difference in anxiety levels pre- and post-workshop?

A)1.147                B)0.503               C)1.1753             D)0.287                E)2.010

Answer 1