A Forensic Psychologist Studying the Accuracy of a New Type

question 38

Essay

A forensic psychologist studying the accuracy of a new type of polygraph (lie detector)test instructed a participant ahead of time to lie about some of the questions asked by the polygraph operator.On average,the current polygraph test is 75% accurate,with a standard deviation of 6.5%.With the new machine,the operator correctly identified 83.5% of the false responses.Using the .05 level of significance,is the accuracy of the new polygraph different from the current one?
a.Use the five steps of hypothesis testing.
b.Sketch the distributions involved.
c.Explain the logic of what you did to a person who is familiar with graphs of distributions,the mean,standard deviation,Z scores,the normal curve and normal curve tables,and the basics of probability,but knows nothing else about statistics.Be sure your explanation includes the overall logic of hypothesis testing including each of the five steps.

---

Definitions:

Change Leaders

Individuals or entities that drive and influence positive transformation within an organization or community.

Archie Carroll

A scholar notable for his work in corporate social responsibility, especially his pyramid model that outlines the responsibilities of businesses.

Ethical Decision-Making Principles

Guidelines or standards used to make choices that reflect moral and ethical values and integrity.

Immoral Manager

Chooses to behave unethically; an amoral manager fails to consider the ethics of a decision or behavior.