It Has Been Suggested That Night Shift-Workers Show More Variability

question 21

Essay

It has been suggested that night shift-workers show more variability in their output levels than day workers. Below, you are given the results of two independent random samples.
a.State the null and alternative hypotheses to be tested.
b.Compute the test statistic.
c.The null hypothesis is to be tested at the 5% level of significance. State the decision rule for the test.
d.What do you conclude?

---

Definitions:

Mental Set

A psychological tendency to approach situations in a certain way due to past experiences or habits, which can limit problem-solving abilities.

Unnecessary Constraints

Limitations or restrictions that are not required and can hinder creativity, progress, or the achievement of goals.

Processing Speed

The rate at which an individual can take in, assimilate, understand, and act on information.

Metalinguistic Awareness

The ability to reflect on and manipulate the structural features of language.