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jsmith613
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Homework Statement
http://www.xtremepapers.com/Edexcel/Advanced%20Level/Mathematics/Subject%20Sorted/S2/S2%202008-06.pdf
Question 1(d)
Homework Equations
The Attempt at a Solution
So I know this is a conditional probability question.
Now I would have said
P(X>8) / P(X=5)
because it is probability I will NOT be served (i.e: time is greater than 8 mins) given I have already waited 5 mins
this gives me infinity because x/0 = inifinty
How do I approach this question?
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