SOLUTION: A study of elephants is conducted to determine the average weight of a certain subspecies of elephants. The standard deviation for the population is 1000 pounds. At a 95% level, ho

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Question 1042156: A study of elephants is conducted to determine the average weight of a certain subspecies of elephants. The standard deviation for the population is 1000 pounds. At a 95% level, how many elephants need to be weighed so the average weight will be accurate to within 350 pounds?
A.
74
B.
32
C.
45
D.
38
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
A study of elephants is conducted to determine the average weight of a certain subspecies of elephants. The standard deviation for the population is 1000 pounds. At a 95% level, how many elephants need to be weighed so the average weight will be accurate to within 350 pounds?
A.74;B.32;C.45;D.38
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n = [1.96*1000/350]^2 = 32 when rounded up
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Cheers,
Stan H.
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