A Task Involves Positioning Two Metal Parts with a Rubber

question 77

Essay

A task involves positioning two metal parts with a rubber gasket sandwiched between them, inserting two bolts into predrilled holes, threading a nut onto each bolt, and tightening each bolt with a pneumatic wrench. In a preliminary study, the manager observed one of his workers perform this task five times. The observations were made in an air-conditioned, well-lighted training facility, at ground level, with all tools and equipment clean and readily available.
$$\begin{array} { | l | c | c | c | c | c | } \hline \text { Observation: } & 1 & 2 & 3 & 4 & 5 \\\hline \text { Task time (seconds): } & 50 & 54 & 60 & 145 & 56 \\\hline\end{array}$$
a. What is the average observed time for this task?
b. What is the normal time for this task if the employee worked at a 10% slower pace than is typical for adequately trained workers?
c. What is standard time for this task if allowances are 8% constant and 6% variable?

---

Definitions:

Animals

Multicellular, eukaryotic organisms in the kingdom Animalia that can move voluntarily and consume organic material.

Inherited Traits

Characteristics or features of an organism that are passed down from one generation to the next through genes.

Scientific Theory

Hypothesis that has not been falsified after many years of rigorous testing, and is useful for making predictions about a wide range of phenomena.

Population Over Generations

Describes the changes in the size, genetic composition, or characteristics of a population across multiple generations.