A Trading Magazine Wants to Know If a Seminar on Self-Confidence

question 11

Essay

A trading magazine wants to know if a seminar on self-confidence helps stockbrokers to obtain new clients. Before and after the self-confidence seminar, 14 stockbrokers rated their self-confidence as low, neutral, or high. In comparing the before and after rankings, there was one plus sign and 13 negative signs for the sign test.
A) Specify the competing hypotheses to determine if there are differences in self-confidence before and after the seminar.
B) Assuming the proportion of plus signs follows a normal distribution, what is the value of the test statistic?
C) At the 1% significance level, what is the decision and conclusion?

• A) Specify the competing hypotheses to determine if there are differences in self-confidence before and after the seminar.
• B) Assuming the proportion of plus signs follows a normal distribution, what is the value of the test statistic?
• C) At the 1% significance level, what is the decision and conclusion?

---

Definitions:

Ervin Goffman

A Canadian sociologist best known for his work on the sociology of everyday life, social interaction, and the presentation of self.

Scripted Way

suggests a predetermined or prescribed manner in which activities, responses, or processes are carried out.

Impression Management

Impression management is the process through which individuals attempt to control or influence the perceptions others have of them, often through strategic self-presentation.

Stigma

A mark of disgrace associated with a particular circumstance, quality, or person, often leading to discrimination and social rejection.