Do One of the Following, as Appropriate: (A) Find the Critical

question 105

Multiple Choice

Do one of the following, as appropriate: (a) Find the critical value $\mathrm { z } \alpha / 2 \text {, (b) find the critical value } \mathrm { t } _ { \alpha / 2 }$ (c) state that
neither the normal nor the t distribution applies.
- $98 \% ; n = 7 ; \sigma = 27 ;$ population appears to be normally distributed.

• A) \(\mathrm { t } _ { \alpha / 2 } = 1.96\)
• B) \(\mathrm { t } _ { \alpha / 2 } = 2.575\)
• C) \(z _ { \alpha / 2 } = 2.33\)
• D) \(\mathrm { z } _ { \alpha / 2 } = 2.05\)

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Definitions:

George Vaillant

A psychiatrist and researcher known for his work on the Grant Study, a longitudinal study of adult development, and his contributions to the understanding of how adults develop and age.

Big Five

A psychological theory describing five core traits of human personality: openness, conscientiousness, extraversion, agreeableness, and neuroticism.

Dimensions of Personality

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Neuroticism

A personality trait characterized by anxiety, moodiness, worry, envy, and jealousy.