I am just confused about all the formulas about exponential distribution and poisson distribution. Here's the problem: Average number of hits each minute is 0.5, what is the probability that the waiting time for the next hit is more than 3 minute?
what is the formula to be used for a basic waiting time poisson problem?
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$\begingroup$
probability
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0The problem is not clear. Is the waiting time between hits iid exponential? – 2012-12-16
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0I think it's just the first hit. – 2012-12-16
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0e^(-1.5). $ $ $ $ – 2012-12-16
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0how do you get that? where does 1.5 come from? Do we need integration? – 2012-12-16
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0Andy: When are you going to stop putting questions on the site without any explanation about where you are stuck, what you tried, what you know? – 2012-12-16
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0it's very clear in the title, i don't know which formula to use. – 2012-12-16