Question 1114112: I have the answer to this question , but I'm confused on what my professor did to get it.
Question : https://image.ibb.co/eYNQhH/20180406_162916.png
The answers:https://image.ibb.co/f4sahH/20180406_163513.jpg
I'm lost on how to get all of them. I'm no sure how to put them in my graphing calculator at all, which is how he tells us to do it. Can someone please show me a step by step process? Thank you.
Answer by rothauserc(4718)   (Show Source):
You can put this solution on YOUR website! Tossing 4 coins and recording the number of heads uses a binomial probability distribution
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the answer jpg just shows me a white page with a dark band at the top
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in general, if you want to know the probability of a certain number of heads for a toss you use the binomial probability formula
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Probability (k successes in n trials) = nCk * p^k * (1-p)^(n-k), where nCk = n!/(k! * (n-k)!)
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for this problem k=number of heads, p=0.5 and n=4
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