With 95% level of confidence within .8mg of estimation error

timer Asked: Jul 4th, 2015

Question description

The amount of sodium in brand S can cola is normally distributed with a standard deviation of 5.0 mg. If you were asked to conduct a survey to estimate the average amount of sodium of the brand S can cola, how many can of cola should be sampled if the sampling results would be, with 95% level of confidence, within 0.8 mg of estimation error?

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