2. Which of the following would have a binomial distribution?

A. A couple will have children until they have three girls or five children. X is the number of
children in the family.
B. Max the magician (who practices flipping coins) will call flips of a coin in the air. X is the number of correct calls in 10 flips.
C. Neither of these is binomial.

Question

2.	Which of the following would have a binomial distribution?
	
A.	A couple will have children until they have three girls or five children. X is the number of 
children in the family.
B.	Max the magician (who practices flipping coins) will call flips of a coin in the air. X is the number of correct calls in 10 flips.
C.	Neither of these is binomial.

rc94 · Answer

B is a binomial, since there are a fixed number of tosses, 10, a fixed probability p, and there are only two possible outcomes on each toss

anonymous · Answer

.	A set of four cards consists of two red cards and two black cards. The cards are shuffled thoroughly, and I am dealt two cards. I found the number of red cards X in these two cards. The random variable X has which of the following probability distributions?
	
A.	The binomial distribution with parameters n = 4 and p = 0.5
B.	The binomial distribution with parameters n = 2 and p = 0.5
C.	Neither choice is correct.