Probability Ps : PS Archive
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Probability Ps

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16 Nov 2005, 23:12
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In a certain cat population, for each of the first 3 months of life, the probability that an anmimal will die during that month is 1/10. For a group of 200 newborn members of the cat population, approximately how many would be expected to survive the first 3 months of life?
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17 Nov 2005, 21:32
joemama142000 wrote:
In a certain cat population, for each of the first 3 months of life, the probability that an anmimal will die during that month is 1/10. For a group of 200 newborn members of the cat population, approximately how many would be expected to survive the first 3 months of life?

P(surviving first month)=9/10

three months= 9/10*9/10*9/10

p(200 members)=(9/10)^3*200
Re: Probability Ps   [#permalink] 17 Nov 2005, 21:32
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