SOLUTION: a bottling company uses a machine to fill bottles with spring water. the manufacturer wants to estimate the mean volume of water per bottle within o.1 ounces. determine the minim

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Question 324245: a bottling company uses a machine to fill bottles with spring water. the manufacturer wants to estimate the mean volume of water per bottle within o.1 ounces. determine the minimum sample size requred to construct a 90% confidence interval. use a standard deviation of 0.5 ounces.
please help....supposed to use formula n=(zco/E)2
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
a bottling company uses a machine to fill bottles with spring water. the manufacturer wants to estimate the mean volume of water per bottle within o.1 ounces. determine the minimum sample size requred to construct a 90% confidence interval. use a standard deviation of 0.5 ounces.
please help....supposed to use formula
n=(zco/E)2
n= [1.645*0.5/0.1]^2 = 68 when rounded up
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Cheers,
Stan H.