Instruction 15-4
One Criterion Used to Evaluate Employees in the Assembly

question 73

Multiple Choice

Instruction 15-4
One criterion used to evaluate employees in the assembly section of a large factory is the number of defective pieces per 1,000 parts produced.The quality control department wants to find out whether there is a relationship between years of experience and defect rate.Since the job is repetitious,after the initial training period any improvement due to a learning effect might be offset by a loss of motivation.A defect rate is calculated for each worker in a yearly evaluation.The results for 100 workers are given in the table below.
Years Since Training Period
$$\begin{array} { | r | l | c | c | c | } \hline & & < \mathbf { 1 } \text { Year } & \text { 1 - 4 Years } & \text { 5 - 9 Years } \\\hline & \text { High } & 6 & 9 & 9 \\\hline \text { Defect Rate: } & { \text { Average } } & 9 & 19 & 23 \\\hline & \text { Low } & 7 & 8 & 10 \\\hline\end{array}$$
-Referring to Instruction 15-4,what is the expected number of employees with less than 1 year of training time and a high defect rate?

• A)4.17
• B)4.60
• C)9.17
• D)5.28

---

Definitions:

Researcher

An individual who conducts rigorous investigations in order to discover new information or reach new understandings.

Unobtrusively

In a manner that does not attract attention; subtly or discreetly.

Between-subjects Design

A research design where different groups of participants are exposed to different treatments or conditions, comparing the effects across these groups.

Experimental Conditions

The controlled environments or variables under which experiments are conducted to examine their effects on subjects.