Random Selection of Marbles Narrative

question 44

Essay

Random Selection of Marbles Narrative
A box contains one red, three blue, and two green marbles. Two marbles are randomly selected without replacement. Define events R, B, G, C, and D as follows:
R = {The selected marble is red.}
B = {The selected marble is blue.}
G = {The selected marble is green.}
C = {Both marbles selected are the same colour.}
D = {At least one of the marbles is blue.}
-Refer to Random Selection of Marbles Narrative. Find P(D).

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Definitions:

Narcolepsy

A sleep disorder marked by excessive daytime sleepiness, often accompanied by sudden muscle weakness or sleep attacks.

REM Rebound

The tendency for REM sleep to increase following REM sleep deprivation (created by repeated awakenings during REM sleep).

Insomnia

Insomnia is a sleep disorder characterized by difficulty falling and/or staying asleep, affecting a person's ability to get restful sleep.

Vigorous Physical

Intense bodily activity that increases heart rate and energy expenditure, contributing to physical fitness and health.