Use Random-Variable Notation to Represent the Event $\mathrm { P } \{ \mathrm { Y } \geq 2 \}$

question 153

Multiple Choice

Use random-variable notation to represent the event.
-For a randomly selected student in a particular high school, let Y denote the number of living grandparents of the student. Use random-variable notation to represent the event that the student
Obtained has at least two living grandparents.

• A) \(\mathrm { P } \{ \mathrm { Y } \geq 2 \}\)
• B) \(\{ 2,3,4 \}\)
• C) \(\{ Y > 2 \}\)
• D) \(\{ Y \geq 2 \}\)

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Definitions:

Mental Representation

The cognitive process through which the mind stores and interprets information about the world, allowing for thought and imagination.

Primary Circular Reaction

Repetitive actions focused on the body that are demonstrated by infants as an early form of learning through physical activity.

A-not-B Error

A cognitive error observed in infants, where they reach for a hidden object where it was last found rather than its new location, demonstrating their developing memory and understanding of object permanence.

Deferred Imitation

The ability to reproduce a behavior observed at an earlier time, even in the absence of the original model or stimuli.