For Statistical Inference About the Mean of a Single Population

question 85

Multiple Choice

For statistical inference about the mean of a single population when the population standard deviation is unknown,the degrees for freedom for the t-distribution equal n -1 because we lose one degree of freedom by using the:

• A) sample mean as an estimate of the population mean.
• B) sample standard deviation as an estimate of the population standard deviation.
• C) sample proportion as an estimate of the population proportion.
• D) sample size as an estimate of the population size.

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Definitions:

Psychosexual Theory

A Freudian theory that proposes that children pass through a series of stages centered on erogenous zones; failures in resolving conflicts at any stage can lead to fixations in adulthood.

Freud

Sigmund Freud was an Austrian neurologist and the founder of psychoanalysis, a method for treating psychopathology through dialogue between a patient and a psychoanalyst.

Personality

The blend of traits and qualities that shape a person's unique personality, impacting their actions, thinking, and feelings.

Psychoanalytic Theory

A psychological theory and therapeutic method developed by Sigmund Freud that emphasizes unconscious motives and conflicts.