(I About 95 $\sigma$ = 1
A) (I), (Ii), and (Iii) Are All Correct Statements

question 29

Multiple Choice

(i. About 95.5% percent of the area under the normal curve is within plus two and minus two standard deviations of the mean. (ii) The normal distribution is a continuous probability distribution.
(iii) In a standard normal distribution, µ = 0 and $\sigma$ = 1.

• A) (i), (ii), and (iii) are all correct statements.
• B) (i) is a correct statement but not (ii) or (iii).
• C) (i) and (iii) are correct statements but not (ii).
• D) (i) and (ii) are correct statements but not (iii).
• E) (i), (ii), and (iii) are all false statements.

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Definitions:

Unjustifiably Worries

No valid key-term for psychological or scientific terminology.

Continually

Repeated frequently in a steady succession without interruption.

Persistently

In a manner that continues firmly or obstinately, despite difficulty or opposition.

Anxiety Disorder

A mental health condition characterized by excessive fear, worry, or unease that interferes with daily activities.