Which of the following random variables X can be considered binomial random variables? For those that can not,
explain why
A) A bag holds 100 marbles, 10 of which are blue. Let X represent the number of marbles drawn until a blue is drawn.
B.) Census data showed that 51% of the US population was female. Select an SRS of 30 people from the US
population. Let X represent the number of females in the sample.
C.) A manager oversees 11 female employees and 9 male employees. They need to pick 3 of these employees to go on
a business trip so the manager places all 20 names in a hat and chooses at random. Let X represent the number of
females chosen