(I If $\pi$ = 1/3 and N = 900, the Mean of This

question 88

Multiple Choice

(i. If $\pi$ = 1/3 and n = 900, the mean of this binomial distribution is 300. (ii) If n = 900 and $\pi$ = 1/3, the variance of this binomial distribution is 200.
(iii) If $\pi$ = 1/5 and n = 100, the standard deviation of this binomial distribution is 16.

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

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Definitions:

Sensory Memory

The shortest-term element of memory, where sensory information is retained for very short periods, usually under a second.

Executive Control System

A cognitive system responsible for planning, decision-making, problem-solving, and regulating attention and thoughts, critical for goal-directed behavior.

Rehearsal Loop

A cognitive process involving the repetition of information to keep it in short-term memory or to encode it into long-term memory.

Visuospatial Sketchpad

A component of Baddeley's model of working memory, responsible for the temporal storage and manipulation of visual and spatial information.