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An ecologist has put out 9 possum traps overnight and will come back to check them in the morning. Historically, the chance of a trap
An ecologist has put out 9 possum traps overnight and will come back to check them in the morning. Historically, the chance of a trap catching a possum in a trap is 30%. Assuming that all the traps are independent and have the same chance of success...
a)[2 marks]What is the probability that they will catch exactly 4 possums?
b)[3 marks]What is the probability that they will catch 5 or more possums?
[for full marks show formulas used]
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