SOLUTION: Suppose it is known that orcas have an average lifespan of 9 years with a standard deviation of 3 years. If Sauron creates 10,000 orcas, how many can be expected to be available
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Question 1117960: Suppose it is known that orcas have an average lifespan of 9 years with a standard deviation of 3 years. If Sauron creates 10,000 orcas, how many can be expected to be available in the coming war 11 years later? Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! Assuming normality, this is z>(11-9)/3 or z>(2/3)
This is probability of 0.2525, so 2525 would be expected to still be alive.
