<PRE><B>Question 805465</B>
You are studying wolves in the wilderness. The weights of wolves in the area are normally distributed with standard deviation 11 pounds. How large a sample must you take to be 93% certain that the sample mean will be within 8 pound of the population mean weight of wolves in the study region?
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n = [z*s/E]^2
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n = [1.8119*11/8]^2 = 6.2070
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n = 7 when rounded up
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Cheers,
Stan H.
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