SOLUTION: a plant has a pollution control system shutdown once every 75 days, on average. What is the probability of at least one shutdown in the next year? give the answer to one decimal pl

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Question 927982: a plant has a pollution control system shutdown once every 75 days, on average. What is the probability of at least one shutdown in the next year? give the answer to one decimal place.
Answer by 428225(90) About Me  (Show Source):
You can put this solution on YOUR website!
365/75= (n)
1*4.866... (The 6 is recurring)
4.866.. = rate per year
Then use the formula (e^-n*n^r)/(r!)
So now you want the probability of getting no shutdowns
(e^-4.86..*4.86..^0)/(0!) = P(0)
1-P(0) =………
You can do this part for yourself.