S1 Discrete random variable edexcel exam question help!?
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Original post by ok_cub2008
You use the probabilities from the first table to find the probabilities in the second table.
As an extension, why not introduce a further "trial" of the random variable, so you have X1 + X2 + X3, and try to find the probability that X1+X2+X3=5... You can do it. Just believe.
I worry about you Shale. You will not learn anything if you simply look at answers and try to find some logic that seems twisted to you just so you can match your answer to the answer in the book.
You should not be working this late either!!
As an extension, why not introduce a further "trial" of the random variable, so you have X1 + X2 + X3, and try to find the probability that X1+X2+X3=5... You can do it. Just believe.
I worry about you Shale. You will not learn anything if you simply look at answers and try to find some logic that seems twisted to you just so you can match your answer to the answer in the book.
You should not be working this late either!!
ok thanks...
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