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

question 16

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,a test was conducted to determine if a relationship exists between defect rate and years of experience.Which of the following p-values would indicate that defect rate and years of experience are dependent? Assume you are testing at ? = 0.05.

• A)0.055
• B)0.045
• C)0.080
• D)0.074

---

Definitions:

Inorganic

Refers to chemical substances that are not made up of carbon-hydrogen bonds, typically including minerals, metals, and salts.

Particle Size

A characteristic measuring the dimensions of particles in a material or substance, impacting properties like flow, reactivity, and dispersion.

Clay

A natural, Earthy material composed of fine-grained minerals, often used in making pottery, bricks, and sculptures.

Sand

Fine, granular material, composed mainly of rock and mineral particles, prevalent in deserts, beaches, and riverbeds, used in construction and manufacturing.