A Sample of Holiday Shoppers Is Taken Randomly from a Local

question 118

Short Answer

A sample of holiday shoppers is taken randomly from a local mall to determine the average daily spending on gifts. From a preselected sample, the standard deviation was determined to be $26. You would like to construct a 95% confidence interval for the mean daily spending on all holiday spending.
A) Find the appropriate sample size necessary to achieve a margin of error of $5.
B) Find the appropriate sample size necessary to achieve a margin of error of $8.

• A) Find the appropriate sample size necessary to achieve a margin of error of $5.
• B) Find the appropriate sample size necessary to achieve a margin of error of $8.

---

Definitions:

Freud's Psychoanalytic Theory

A theory developed by Sigmund Freud that emphasizes the importance of unconscious processes in shaping behavior, personality, and psychological disorders.

Penis Envy

A concept in Freudian psychoanalysis referring to a supposed sense of envy a female might feel towards males, related to the possession of a penis.

Superego

In Freudian psychoanalysis, the part of the personality responsible for moral standards and self-criticism, acting as the counter to the id.

Ego

In psychology, a component of Sigmund Freud's theory of personality, the ego operates based on the reality principle, balancing the desires of the id and the moral constraints of the superego.