SOLUTION: when a pin is tossed it lands 1/4 pointing up and 3/4 point down when the pin is tossed twice and the x is the random variable that counts the number of times that it lands up.

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Question 697338: when a pin is tossed it lands 1/4 pointing up and 3/4 point down
when the pin is tossed twice and the x is the random variable that counts the number of times that it lands up.
a) it says write the distribution for x
b) that i'm really confused how would i draw a histogram (i know what it looks like its just i dont know how to apply it to this type of question). because the question asks to draw a histogram that represents the probability distribution.
c)then it says shade the area that reprsents the probability that x=0
i really need help
thank you
Answer by reviewermath(1029) About Me  (Show Source):
You can put this solution on YOUR website!
a) X~Binomial(2,1/4)
Here's the distribution of X:
X = {0, 1, 2}
P(X = 0) = 9/16 or 0.5625
P(X = 1) = 3/8 or 0.375
P(X = 2) = 1/16 or 0.0625