The Amount of Money That Maria Earns in a Week

question 26

Multiple Choice

The amount of money that Maria earns in a week is a random variable with a mean of $970 and a standard deviation of $25.The amount of money that Elena earns in a week is a random variable with a mean of $860 and a standard deviation of $10.How much more do you expect Maria to earn in a week than Elena? What is the standard deviation of this difference? Assume that Maria's earnings are independent of Elena's earnings.

• A)$1830,$35
• B)$110,$26.93
• C)$110,$22.91
• D)$110,$15
• E)$1830,$26.93

---

Definitions:

Cognitive Dissonance

A psychological state where a person experiences discomfort or distress from holding two or more conflicting beliefs, values, or attitudes simultaneously.

Role Playing

A teaching or training method that involves acting out roles in specific scenarios to practice behaviors or explore complex situations.

Foot-In-The-Door Phenomenon

A compliance strategy where persuading someone to agree to a small request increases the likelihood they will agree to a larger request later.

Fundamental Attribution Error

The tendency to overemphasize personal characteristics and ignore situational factors in judging others' behavior.